Thank you for reply. I opened the program through item in its contextual menu, but after that a new message saai me that i have to contact developer to be sure that the program can run in mac os 11

Hi all,
I'm trying to run version 6.4.2 on MacOS 11 Big Sur but i have no success. An alert says me to contact the developer to know if the app is compatible with this version of MacOS. Does anyone have the same problem?