I am helping someone who has serious problems with their QB online books going back several years including many that are still in the transactions that need review so they never got into the reports.  When I tried to correct some things in 2020 I got a pop-up requiring a password because the year is closed.  I tried every password I know of, none worked.  Also there are many changes that need to be made so it will be VERY time consuming to have to enter a password for every entry.  Until about a month ago they had Simple Start, now Essentials.  They did give their tax return preparer their password and I know he made some Journal Entries in some prior years.  Is there a chance they made a password only they have with Simple Start?  Anyone have any idea what I can do?  TYIA.