Asking for some help please

Hello, I'm new here and I have a slight problem with my forum.
I'm running the Store mod currently. It is giving points to people who are posting and making new threads. The problem is, I set the Moderators so that they can not delete their own posts/threads or others. But when I test to see if they can delete, it is possible. I don't understand how they can delete their own posts still even after I set it so they can't.

I've noticed that when a mod posts, they get lets say 5 points. Then when they delete their own thread they maintain that 5 points but lose that 1 post they just got. So by doing this, they could probably get lots of points by posting and deleting.

I was wondering if there was a way that when someone deletes their post, their points are deducted along with their post(s). It possibly could be that I'm running a later version of the Store.

So basically I want to know, how to make it so Mods can't delete their own threads/posts. And how to make it so that points are detucted when they delete their threads/posts.

Any suggestions? And thanks for your time.