The one I'm working on now is this Mac. .
The search issue takes multiple forms. If I select a Tag, for instance, notes w/o that Tag come up. If I search for a text string, it just doesn't search. I get no result.
I have a current up-to-date w/ the new higher rates Premium Account, as it says on my post. I get no error messages, just the logo with the "working" circle going around indefinitely.