I have been using WAM software for about a year and it has been working fine. I have given different access rights to different users.
One day the software kept on crashing and now I get an internal server error on my pages.
I thought that maybe the software was corrupted. But I created another secured site on the same shared server, creating different users and it works.
Has anyone had this problem before?

If you open a support ticket Andrej and send us your .HDB file, we can take a look at the settings and see if anything is wrong.