Andrea,

If you want to try this appimage of mine on your distros, you can
download it from:
https://drive.google.com/file/d/1cDd1yMXZL4k7dkyyHuXxQndcK5JF6weF/view?usp=sharing

I had downloaded your appimage to try earlier on Fedora 32 which is out of date so did not work.

Now I have Fedora 35 built with only the default packages, but it is complaining about libzz2.so... missing so if I ever get the network up on that computer I will install bzip2-devel and re-try.