Apple Notes password stopped working.

I tried opening a locked Note with the password I have used for years. It is no longer working. I followed online advice to reset Notes passwords but the instructions clearly stated that old locked Notes would not be affected. Nonetheless I reset my Notes password to match my device login as well as use FaceID. The old note is still locked. I vaguely recall a pop up asking if I wanted passwords to update and match or something and I hit Yes without thinking. Maybe that is what has messed up my ability to access this locked note? I have tried every possible password as well as my device login code and nothing is working.