Help Me Plz

So I was testing a mod menu for my friend from a website called cheatsformacs.com or something, I've tried using it a private match, then I stopped using it. I was recently, i believe, perm banned from 2 servers because it was part of my profile or somethin, does anyone know how I can delete it off my computer?






And anyone know how to change the GUID?

Alas GUID not as you will not change. Try replacing the HWID.

So what do I use to get unbanned from servers?