Using Connected Accounts (version 2.10 and above)
In order to display multiple user feeds, you’ll need to connect the Instagram accounts on the “Configure” tab. You can also use the access token from the accounts if you have them available.
After connecting the accounts, you can add the user names of each accounts to the shortcode: [instagram-feed user="smashballoon,my_other_account"]
You do not need to connect a specific account (though you will need to connect one account) in order to display multiple hashtag feeds. Just seperate multiple terms by comma:
Using Access Tokens (version 2.9 and above)
You can display photos from multiple Instagram accounts in the same single feed, mixed together and ordered by date. To do this simply separate the list of access tokens or hashtags with commas. You can do this either on the plugin’s Settings page or directly in the shortcode:
[instagram-feed accesstoken="282538967.33f6a9f.22b134fghsdfg99ea3bbee24fb241b74, 222345678.3a87jm9f.22b198d0c35778hdrbee24fb2416g4"]
You can do the same for hashtags. Simply separate the list with commas.