I have a new iMac running Big Sur 11.2 and TT worked for about an hour, then spontaneously quit and now will not reopen. I purchased TT Home & Business from Costco as a digital download. did call customer service and they provided me with a new download, but the same problem exists. Just for kicks I tried to open TT2019 to see what would happen. It opened and went through a series of updates and then quit and will not reopen. I think the problem is in Big Sur. I'm going to try my luck with Apple support. Pray for me.
