Which version of EpiData?
My experience with the current release of EpiData with Monterey is similar to earlier versions of MacOS.
If you right-click on the app in Finder, you will get that message. Cancel that and then do it again. This time you will be able to click on Open. After that, it will run normally.
Jamie
I have encountered problems when trying to install EpiData on my new Apple Mac. The OS is Monterey 12.2.1
I get a message to contact the developers and ask them to update the software so that it can be installed if one has Monterey OS.
I am teaching an online course at the University of Pretoria, that includes EpiData, starting in 10 days time. There are 1600 students enrolled and almost certainly there will be some with the Monterey latest OS.
Regards
Brendan