dstillman, I am sorry to be using methods that are not supportive of debugging the problem. I found a workaround that seems to be working right now: I removed zotero and downloaded an old version (5.0.40). This version seems to be fine in letting me…
...I can confirm that I had to do 'Verify Server' multiple times on my other computers, just as described in the other ticket you linked. Those computers were set up on previous zotero versions. Right now, this does not help.
Hey, that is very good news! For zotfile and zandy I often saw the problem that there is no way through the API to tell zotero servers that the attachment has changed (--> annotations in pdfs were added, for example). Has that been resolved yet?