No Permission to save (Mac)

Hello, I have several questions actually.
I’m on MAC. I moved from Mojave to Catalina. I had to reinstall GIMP.
I have installed version 2.10.10 but I wonder what would be the most recent version that would be suitable for Catalina.
My second question is that GIMP can’t save my files because it doesn’t have access to my folders. However, I have given the authorizations in the System Preferences. Could someone please help me? Thank you so much.

You need to grant gimp disk access in order to save.

Thank you for your return.
That’s what I had done before but it didn’t work. I uninstalled the software again and chose to install another version. This time it works.