I discovered a way to get the sync error to go away, by going to "Options", "Note Attachments" and deleting the attachments exceeding 2GB, but several things remain unclear:
Is there an adjustment to the maximum size attachments, if so, where?
Is there a bulk way to delete attachments in this list instead of using the "delete" button on each item in this attachment list?
Why are there so many attachments showing in this list after the corresponding notes have been deleted?
I hope we can keep this open for a week or so until closing so that I might get answers to these questions.