Hello @loretta ,
Make sure the image you're adding to your FB post meets its sizing requirements, as the sizing minimums for different social platforms can vary wildly (even between Insta and Facebook). Additionally, certain platforms have API restrictions, meaning that they may not allow multiple images to post at once.
You should be able to post multiple images for all four platforms. If you're doing a Social Share of your email, that may be part of the restriction, in which case you should instead copy the email's link and then make a fresh, new standalone social post.
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