Hello Alex,
thank you for your reply!
Actually, I didn't explain well, the plugin for Comments works well on my site, users can post comments. The only problem is that when a user makes a comment, he doesn't earn points. When I go to the user profil, i can't see these points while for "like" or " send request" the points are assigned. The plugin is enabled and everything is set up properly.
Thanks, Tasos