Did you ever fix the problem?  I had to disconnect and reconnect our Bank of America account.  I have the exact same issue.  (My other 2 checking accounts work).  I've read through everything and have been unable to make it work. (I tried to add the additional account/then rename/merge, etc... I'll have to call Bank of America for that one because they won't let me "reconnect" since our account is already connected through bank feeds (from the bank's perspective).  BUT it doesn't work in QuickBooks - AND there is no "online banking tab".  Grrrr.... So frustrated with QuickBooks Desktop Pro 2022! I've used QuickBook for years (at least since 2004+) and I've NEVER had this many issues!  Never!