Thanks, Mike. Most of us who are asking about this issue have consulted those minimum requirements. The fact remains, TT does not run on Big Sur. Some have pointed out that when TT says "2020: macOS Mojave 10.14 or later," they mean any version of the Mojave OS starting with 10.14. That does not necessarily mean TT will work on Catalina or Big Sur. Many of us have found that TT does NOT work on Big Sur. It installs, but it does not open.
