Has anyone else had a view fail to sync after syncing just fine for a long time? I have several views from several tables in a source base all syncing to another base. All but one are still fine. No matter what I do, that one table will not sync anymore! I’ve tried refreshing the sync, changing which view is synced, creating a new sync in the same recipient base, and even syncing that same view/table into other test bases, and it will not work anywhere. Airtable Support was baffled as well.
Occam’s razor - you deleted/renamed something you shouldn’t have, resulting in an impossible or dizzyingly loopy schema. Or someone with access to your base did. I’d suggest making a backup, restoring your base to an earlier version which you are certain allowed the use case you’re describing, and compare the two, property by property.
We can speculate here as much as we want but oddities such as this one are a large part of the reason backups exist in the first place; troubleshooting them manually, as you have hopefully realized by now, is a highway to looney land.