Trying to bypass bans in this particular game

Some of you are SEO sellers/buyers and I am "Real Money Trading" Seller in this MMO game. I sell items to other players in this game.

I have tried VPNs (mainly Cyberghost), changing Mac Address and spoofing HWID (Hardware Serial Number and Volume ID).

All my accounts will always get banned. Even the ones that are only Level 2 and can't do "trading"

Any ideas please? Thanks.