Hi Vincenzo,

Thanks for interesting on our Easydiscuss product

Opps, thanks for reporting, actually that is not a bug, you can actually change the ACL user permission from backend.

By the way, can you give it a try again from our demo site, the logged in registered user shouldn't able to edit other user reply now.

Last question: Is there a module or a script to create a ranking?

Can you elaborate more details regarding this question? Please advise.