@sgeorgefl That's my exact issue as well.  Worked fine for years, then just won't.  I sent it up to engineering today after three plus hours on the help chat redoing all the things I've already tried.  I will keep you posted.  I recommend getting on the help chat so they are aware of more customers having the same issue.  I tried different operating systems and devices as well as browsers. It's definitely a QBO issue that I think happened when they did some kind of update IMO.