After releasing it on early January 2021, I got a report from first 3Sixty user, he said that the program can not import new panorama file.
I fixed the bug, then another user also reported that he can not add images and pdf files to the program.
So I checked again and solved the problem. The fixed version of 3Sixty is uploaded with same version number and same link. So please if you already downloaded it before this post, download it again, uninstall the old one from your computer and reinstall the new one.