Hi,
I'm having this problem repeatedley with PEX:

] Edit by Stormbow: Removed monstrous wall of formatting bugged text. [

I have the permissions.yml file here:
https://drive.google.com/open?id=0B-SJAxZgkbfXaDBDTWVEazBJa28

Your permissions.yml file was kind of a mess, and I don't have anything better to be doing at the moment, so I fixed everything in your file for you: https://pastebin.com/6AuPBmEz.

Test this out and see how everything works.

NOTE: I changed "Co-Owner" to "CoOwner" because "Co-Owner" won't be recognized as a group on the server for some plugins.

And, as a nice little "screw you" to your "cheater" group, I removed all of their permissions, so they can stand there, do nothing, and not even walk or talk (in most cases). LOL (You can, of course, delete those 2 lines— 158 and 159 —if you don't like the idea.)

Side note: The options: setting build: false / build: true only applies to servers using the EssentialsXAntiBuild or EssentialsAntiBuild plugin.

ok thank you very much!

You're welcome. :-) Let me know if you run into any other problems. (You can reply to this ticket, even though it's closed.)