Hi @christineschofield,
Our developer has offered this bit of custom CSS to help with the mobile size.
In your WordPress dashboard, you will need to go to Feed Them > Settings > Global Options, click the Custom CSS checkbox and add the custom CSS, then scroll to the bottom and click the ‘Save All Changes’ button before navigating away from the page.
This custom CSS should do the trick to reduce the image size on mobile. You can reduce the image size even more by increasing the padding amount that is set.
@media ( max-width:760px ){
.fts-instagram-inline-block-centered {
padding:0 40px 40px;
}
}
After you apply this, go to your WP Page and then clear the FTS cache so the changes take effect (Feed Them > Settings > Global Options > Clear All FTS Cache).
Let us know how it goes.