EDFbrowser does not open in macOS Big Sur

Hello! Since I have installed the latest macOS version Big Sur a view weeks ago, the EDFbrowser V1.77 is not running anymore. I get the notification that I would not have permission to open the program (although according to the "information" tab for the EDF browser I should have permission). Would you have an idea about how I could resolve this proglem? Thank you for your help and best regards, Patrick