I used VPN once for something that had nothing to do with T11 and I got an EMail stating that if i continued to use VPN i'd get banned. I wasn't even doing any offers with it! I have since deleted it and have not used it for anything.

If they can detect me so easily and send me a letter like that, when I wasn't even using it for that purpose, how do these teams seem to keep getting away with it?
Why can I not even use VPN for a non-related purpose, but they can use it to complete hundreds of offers?