Mine caught up (all of my devices appeared to be in sync) but the problem has returned – a new bookmark on my laptop is not appearing anywhere else.
I reported this at Bookmark sync isn't working, "OVER_QUOTA" – looks like the QUOTA was bumped from 50,000 to 75,000 according to the new error in the traffic log. This is not a fix, and it’s taken over a month to get this far.
If this thread is a separate issue from mine, I’m happy to take it over to my thread.