Reviews Feed Error Message Reference

A reference table of Reviews Feed error messages and how to fix each one, starting with enabling billing on your Google Cloud project.

Are you seeing an error message in Reviews Feed and not sure what it means?

In this guide, we’ll list the messages Reviews Feed shows, explain what each one means, and show you how to fix it. All you need is the message you’re seeing and access to your WordPress dashboard.

Before you get started, make sure Reviews Feed is installed and activated on your WordPress site. Our guides cover installing the free version and the paid version.

• Finding Where the Message Shows
• Fixing Messages When Adding a Source
  • Could not connect this source, please make sure you have provided the right info.
  • Could not add source. Please check the listing URL or location ID and your API key, then try again.
  • Enter a listing URL or ID first.
  • Messages About the Listing URL or ID
  • This source already exists
• Fixing Source Limit Messages
  • You can only add 2 Google and 5 Yelp sources
  • You can only add 1 source
  • Please verify your email
  • Source Limit Exceeded. Please enter API Key.
• Fixing API Key Messages
  • Invalid API Key
  • The API key is invalid. Please try a new API key.
  • Unknown error occurred!
  • Your TripAdvisor API key has stopped working
• Fixing Messages in Your Feed
  • Feeds are updating once a week. To update them more often, add an API key.
  • New reviews couldn’t be fetched
  • This source has reached the number of reviews the plugin can fetch on your current plan, so new reviews can’t be fetched for it right now.
  • No reviews to show yet
  • This error message is only visible to WordPress admins
  • No Posts Found.
  • No feed with the ID 3 found.
  • No sources available for this feed.
  • Unable to retrieve reviews history for this source. Clear the cache or reconnect the source to try again.
• Fixing Reviews Server Connection Messages
  • Couldn’t reach the reviews server. Please check your connection and try again in a moment.
  • The reviews server returned an error (HTTP 500). Please try again shortly.
• Fixing WooCommerce and Easy Digital Downloads Messages
• Fixing Facebook Messages
  • Please upgrade to Reviews Feed Pro to display Facebook reviews.
  • There was a problem connecting this account. Please make sure your access token and ID are correct.
  • Facebook cannot be connected from this screen. Add the source under All Feeds, then choose it here.
• Getting More Help
• Frequently Asked Questions

Finding Where the Message Shows

Start by noting where you see the message. Each section below covers the messages from one place in the plugin.

• When you add a source, the message shows in the Add Sources window after you click Finish. You’ll find it under Fixing Messages When Adding a Source or Fixing Source Limit Messages.
• When you add or change an API key, the message shows in the API key window. You’ll find it under Fixing API Key Messages.
• At the top of the Reviews Feed pages, a notice titled “Your TripAdvisor API key has stopped working” can show. You’ll find it under Fixing API Key Messages.
• At the top of the feed editor, a notice about updating once a week or adding an API key can show. You’ll find it under Fixing Messages in Your Feed.
• In the feed editor, a notice titled “New reviews couldn’t be fetched” can show in the preview. You’ll find it under Fixing Messages in Your Feed.
• On a page, a box that starts with “This error message is only visible to WordPress admins” can show in place of your feed. Only admins see it. You’ll find it under Fixing Messages in Your Feed.
• On the All Feeds page, a notice titled “Some sources could not fetch new reviews.” names the sources that need your attention. You’ll find it under Fixing WooCommerce and Easy Digital Downloads Messages.

Then, find your message in the matching section. Each message is quoted the way Reviews Feed shows it.

Fixing Messages When Adding a Source

These messages show in the Add Sources window, after you enter your source’s details.

To open this window, go to Reviews Feed » Settings. On the General tab, find the Manage Sources section. Then, click Add Source, or Add New if you’ve already added a source.

Could not connect this source, please make sure you have provided the right info.

This means Reviews Feed can’t connect the source with the details you entered. For example, you can see it when a Google Place ID isn’t valid.

To fix it, check the ID or URL and paste it again. Then, click Finish.

For Google, our guide to getting the Google Place ID shows how to find the right one.

A Google source also needs a business listing with a physical address. Listings that only show a service area don’t work.

Could not add source. Please check the listing URL or location ID and your API key, then try again.

This means adding the source failed. The server didn’t send a more detailed reason.

To fix it, check the listing URL or ID. If you entered an API key, check it too. Then, click Finish again.

Enter a listing URL or ID first.

This shows when you click Finish while the field is empty. Paste your source’s URL or ID into the field, then click Finish.

Messages About the Listing URL or ID

Each review site needs its own kind of link. When the URL or ID you paste doesn’t fit, Reviews Feed tells you what it expects. Most of these messages end with an example link.

Next, find your review site in the table below. Then, paste a link in the form the message asks for and click Finish.

Review site	Message
TripAdvisor	We could not find a TripAdvisor location ID in that. Paste the listing URL (it contains “-d” followed by numbers) or the numeric location ID.
TripAdvisor	This TripAdvisor URL is for a tour or experience (Viator), which isn’t available through TripAdvisor’s public API. Please paste a URL for a hotel, restaurant, or attraction instead.
TripAdvisor	This TripAdvisor link is a member profile, not a business. Open the business on TripAdvisor and copy the URL of its own page.
TripAdvisor	This TripAdvisor link is a category page (a destination or a list of places), not a single listing. Open the individual business and copy the URL of its own page.
Trustpilot	Enter the Trustpilot review page URL, not just the domain.
WordPress.org	Your URL must contain “/themes/” or “/plugins/”.
Airbnb	Enter an Airbnb listing URL or numeric ID.
Booking.com	Enter a Booking.com hotel URL or numeric ID.
AliExpress	Enter an AliExpress product URL or numeric ID.

TripAdvisor doesn’t share reviews for tours and experiences. For those, use the link of a hotel, restaurant, or attraction instead. Our guide on adding a TripAdvisor source lists the links Reviews Feed accepts.

This source already exists

The source you entered is already in your sources list. Reviews Feed doesn’t add it again.

Nothing needs fixing. You can choose the source when you create or edit a feed.

Fixing Source Limit Messages

Without an API key, Reviews Feed limits how many Google and Yelp sources you can add. When you reach the limit, one of these messages shows.

You can only add 2 Google and 5 Yelp sources

In the paid version, you can add up to two Google sources and five Yelp sources without an API key. The window also says “To add another source, please delete any existing sources.”

To add more, click Add an API Key and add your own key for that review site. A saved key lifts the limit for its review site. You can also delete a source you no longer use.

To get a key, see our guides to creating a Google API key and creating a Yelp API key.

You can only add 1 source

In the free version, you can add one Google or Yelp source without an API key.

To add more, click Add an API Key and add your own key. Or, click Upgrade your Plan to see the paid license levels. You can also delete the source you already added to make room for a new one.

Please verify your email

In the free version, Reviews Feed asks you to verify your email before you add a Google or Yelp source without an API key. The window says it takes less than two minutes.

To continue, click Verify Email.

Source Limit Exceeded. Please enter API Key.

This shows after you click Finish, when you’ve reached the number of sources you can add without an API key for that review site. Reviews Feed then takes you to the API key step. That step shows the notice “You have reached the maximum sources limit, Please enter a valid API key to retrieve new sources.”

To add the source, enter your own API key for that review site in this step.

For Google, see our guide to creating a Google API key. For Yelp, see our guide to creating a Yelp API key.

For TripAdvisor, see our guide to creating a TripAdvisor API key.

The notice also asks “Are you using a local host?” On a site that runs on your own computer, API keys may be needed for every source.

Fixing API Key Messages

Most of these messages show in the API key window. To open it, go to Reviews Feed » Settings.

On the General tab, scroll down to the Manage API Keys section. Then, click the pencil icon on the review site’s card. To learn what else is on the Settings page, see our settings reference.

Invalid API Key

This means the review site refused the key. Reviews Feed checks the key when you save it and doesn’t save a key that’s refused. The key field also turns red.

To fix it, check the key for your review site.

• For Google, your Google Cloud project needs billing turned on and Places API (New) enabled. Our guide to creating a Google API key walks you through both.
• For Yelp, see our guide to creating a Yelp API key.
• For TripAdvisor, keys now come from TripAdvisor’s Terra platform. TripAdvisor retired its older keys on August 31, 2026. A TripAdvisor key is optional. Your TripAdvisor feeds work without one and refresh once a week. To get a key, see our guide to creating a TripAdvisor API key.

Then, paste the key into the field again and click Update.

The API key is invalid. Please try a new API key.

This is the same problem, shown in the Add API Keys window.

That window opens when you click Add an API Key from a source limit message. To fix it, follow the steps under Invalid API Key above. In this window, click Add instead of Update.

Unknown error occurred!

This message shows only in the API key windows, when saving a key returns an error. It doesn’t come from adding a source or a Google Place ID.

To fix it, check the key and paste it again. Then, click Update. In the Add API Keys window, click Add instead.

If the key field turns red, follow the steps under Invalid API Key above.

If adding a Google Place ID fails, the message shows in the Add Sources window instead. An example is “Could not connect this source, please make sure you have provided the right info.”

See Fixing Messages When Adding a Source for those messages.

Your TripAdvisor API key has stopped working

This notice shows at the top of the Reviews Feed pages when a TripAdvisor source still uses an older TripAdvisor key. TripAdvisor retired the API those keys belong to on August 31, 2026.

To fix it, click Manage API Keys in the notice. Then, click the pencil icon on the TripAdvisor card and choose one of two fixes.

• To delete the old key, click Remove. Your TripAdvisor sources then switch back to the connection built into Reviews Feed. Your feeds refresh once a week.
• Or, paste a key from TripAdvisor’s Terra platform and click Update.

Fixing Messages in Your Feed

These messages show in the feed editor, on your page for admins, or in your sources list.

Feeds are updating once a week. To update them more often, add an API key.

In the paid version, this notice shows at the top of the feed editor. It appears when the feed has a Google or Yelp source without an API key.

It’s a reminder, not an error. Your feed keeps updating once a week.

To update more often, click Add an API Key. in the notice and add your key for that review site.

In the free version, the notice reads “To fetch new reviews, add an API key or Upgrade your plan.” It can start with the date your feed was last updated. To fetch new reviews, click Add an API Key. in the notice and add your key. Or, click Upgrade Plan.

New reviews couldn’t be fetched

This notice shows in the feed editor’s preview when a source can’t get new reviews. It lists each source that failed, followed by the reason.

The reason can read “The reviews server couldn’t fetch reviews for this source”, with a short code in parentheses. When you contact our support team, include this code.

Your feed keeps showing the reviews it already saved. Visitors don’t see an error. Reviews Feed tries the source again in the background.

For a Google source, you see this notice when Google refuses your API key or Place ID. To fix it, check your Google Cloud project’s billing and that Places API (New) is enabled. You can also create a new key and add it in place of the old one, as shown under Fixing API Key Messages.

Then, check the Place ID with our guide to getting the Google Place ID.

For other review sites, send the source’s line from this notice to our support team.

See Getting More Help.

This source has reached the number of reviews the plugin can fetch on your current plan, so new reviews can’t be fetched for it right now.

This reason can show for a source in the “New reviews couldn’t be fetched” notice. It means the source hit the number of reviews your license level lets Reviews Feed fetch. The reviews already saved keep showing in your feed.

To see what each license level includes, check our comparison of the free and paid versions. If you’re not sure which one you need, contact our support team.

No reviews to show yet

This shows in the feed editor’s preview when the feed has no saved reviews and one of its sources failed. Its second line reads “This feed appears on your site as soon as it has reviews.” Until then, visitors see nothing in the feed’s place.

To fix it, look for the “New reviews couldn’t be fetched” notice in the preview. It names the source that failed and why.

This error message is only visible to WordPress admins

This box shows on your page in place of a feed that has an error. Only admins see it. Visitors see nothing.

The box lists each message. After a source’s message, it adds “New reviews will not be fetched until this is resolved.” and a link back to this guide.

To fix it, find the message from the box in this guide.

No Posts Found.

This means the feed has no reviews to display. It comes with one of two explanations.

• “There were no posts that fit your filters.” Your feed’s filters hide every review. Next, open the feed in the feed editor and go to the Settings tab. Under Filters, include more star ratings or loosen the other filters.
• “There were no posts found for the sources selected.” The feed’s sources have no reviews to show. Your review site must have reviews for that source. If it doesn’t, change the feed’s source.

No feed with the ID 3 found.

The number in this message is the feed ID on your page. It means your shortcode or block points to a feed that doesn’t exist, for example one that was deleted.

To fix it, go to Reviews Feed » All Feeds to see the feeds you have. Then, place one of them on your page, or create a new feed. A feed’s shortcode looks like [reviews-feed feed=3], with your own feed ID.

No sources available for this feed.

This means the feed doesn’t have any sources. To fix it, open the feed from Reviews Feed » All Feeds and add a source to it.

Unable to retrieve reviews history for this source. Clear the cache or reconnect the source to try again.

In the paid version, a warning icon can show on a Google or Yelp source in your sources list. To see this message, hover over the icon. It means Reviews Feed couldn’t import that source’s older reviews.

To try again, go to Reviews Feed » Settings and open the Feeds tab. Under Caching, click Clear All Caches. The warning clears.

The reviews already saved on your site are kept. If you’ve added an API key for that review site, Reviews Feed tries to import the older reviews again.

Fixing Reviews Server Connection Messages

Reviews Feed gets reviews from most review sites through our reviews server. These messages mean the connection to that server failed.

Couldn’t reach the reviews server. Please check your connection and try again in a moment.

This means your site can’t connect to our reviews server. It happens when the connection times out, is refused, or the server’s address can’t be found. It can show when you add a source, and in the feed editor’s “New reviews couldn’t be fetched” notice.

To fix it, wait a few minutes and try again. If the message keeps showing, contact our support team with the exact message.

The reviews server returned an error (HTTP 500). Please try again shortly.

The number in parentheses can be different. This means our reviews server answered with an error. It can show when you add a source or save an API key.

To fix it, wait a few minutes and try again. If the message keeps showing, contact our support team with the number from the message.

Fixing WooCommerce and Easy Digital Downloads Messages

WooCommerce and Easy Digital Downloads sources read reviews from your own site. When one of them can’t get reviews, the All Feeds page lists it under “Some sources could not fetch new reviews.” The reviews already saved still show in your feeds.

The admin box on your page can also show one of these messages. Next, find yours in the table below.

Message	How to fix it
Please activate WooCommerce to display reviews from this source.	Activate WooCommerce on the Plugins page.
Please upgrade to Reviews Feed Pro to display WooCommerce reviews.	WooCommerce sources need the paid version, at the Plus license level or higher.
The WooCommerce source has no valid products configured.	Update the source with products that exist on your site, or remove the source.
The WooCommerce product (ID: 123) no longer exists. Please update or remove this source.	Update the source with a product that exists on your site, or remove the source.
Please activate Easy Digital Downloads to display reviews from this source.	Activate Easy Digital Downloads on the Plugins page.
Please install and activate the EDD Reviews extension to display download reviews.	Install and activate the EDD Reviews extension for Easy Digital Downloads.
Please upgrade to Reviews Feed Pro to display EDD reviews.	Easy Digital Downloads sources need the paid version, at the Plus license level or higher.
The EDD source has no valid downloads configured.	Update the source with downloads that exist on your site, or remove the source.
The EDD download (ID: 123) no longer exists. Please update or remove this source.	Update the source with a download that exists on your site, or remove the source.

When you add one of these sources, you can also search by a product’s or download’s URL. If Reviews Feed can’t match it, you see “We couldn’t find any product related to that url. Please double check it and try again.” For Easy Digital Downloads, the message says “download” instead of “product.”

To fix it, check the URL and search again.

For setup help, see our guides to setting up a WooCommerce reviews feed and setting up an Easy Digital Downloads reviews feed.

Fixing Facebook Messages

Facebook sources come with the Plus license level or higher. These messages show when a Facebook source can’t connect.

Please upgrade to Reviews Feed Pro to display Facebook reviews.

This means the feed has a Facebook source. However, your site runs the free version. Facebook sources need the paid version, at the Plus license level or higher.

There was a problem connecting this account. Please make sure your access token and ID are correct.

This shows in the Add a Source Manually window for Facebook. It means Reviews Feed can’t connect with the ID and token you entered.

To fix it, check the Facebook Page or Group ID field and the Facebook Access Token field. Then, click Add.

Facebook cannot be connected from this screen. Add the source under All Feeds, then choose it here.

You can see this message in a Trust Badge’s settings. To connect a Facebook source, add it under All Feeds first. Then, come back and choose it.

Messages that come from Facebook itself, such as an API error with a number, are covered in our Facebook API error message reference.

Getting More Help

If your message isn’t listed here, or the fix didn’t work, our support team can take a look. To get your site’s details ready, go to Reviews Feed » Support. Under System Info, click Copy and paste it into your request.

Also include the exact message, where you saw it, and the review site. In the paid version, click Submit a Support Ticket on the same page. In the free version, click Get Help in the WordPress.org Forum. To learn what else the Support page offers, see our guide on using the Reviews Feed Support page.

That’s it! Now you know where Reviews Feed shows its messages, what each one means, and how to fix it.

Next, see our guide on why you might see only a few reviews to learn how a feed gets its reviews.

Frequently Asked Questions

Below, we’ve answered some of the most common questions about Reviews Feed error messages.