Error Code BLZBNTBTS00000011

I have been playing Diablo 3 for awhile but on Feb 25th 2021 I could no longer download my game. When I tried, I would get an error code listed above with the explanation “Could Not verify my digital signature”. I tried all recommendations but nothing seem to work. I deleted the app in my game. Temporarily took down my security system (MacAfee) and nothing worked. Should I delete my account and start over…any credit for money spent? Thanks