Unfortunately, Intuit has not addressed the problem.  I did as one of our colleagues recommended and it worked.  However, the next day I encountered the same problem again.  I called Proseries customer service and I was given the same answer: "we are looking into it".  Nonetheless, that is the same answer I have been given for months and the same one we, all (members of this discussion), have been given. I have figured out ways to make the 2021 Proseries program work but I have to do it every single time I use the program and for every single client.  In short, I cant use the 2021 Proseries software and I am not receiving any help from the maker: Intuit.  

if you find a solution, I would appreciate you sharing it with all members of this discussion. 

thank you and good luck