Hey @wiredathart,
Sorry to hear your sync is doing this. Unfortunately with the Facebook/Online Store sync we aren't able to do much since the issues are typically on the Facebook Business Manager end.
I'd recommend taking a look at this Support Center article to see if that helps with those description errors you're getting. I did a little digging and found that this helped some other sellers experiencing the same issues.
If you still have trouble, please reach out to our direct CS E-Comm team here so they can take a closer look and look at your setup with you.
Ashley C
Community Moderator, Square
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