Hello

I am having problem with opening 21 Proseries. I am getting a blank or white screen. It will not load. It wont open to the client list. I checked 2020 and it was fine. I tried shutting down and unplugging the computer, and reinstalling the software. No problem in signing in and entering the intuit code.. but it wont go all the way through like its stuck on a blank screen. What do I do?