I had 2 HDDs on my desktop and ran GRP from my primary drive. On being banned I installed windows 7 on the secondary drive and tried to play GRP from the secondary HDD, with a new account. I was banned.
I then removed the primary HDD and swopped over with my laptop, reinstalled windows on both pcs, fresh install of GRP and now both systems are playing GRP with no problems.
I summised that the ban is priamry HDD HWID, the only way around this is to use a different HDD. Alternatively go to the other Server, this also works
Hope this info helps some ppl to play again......sensibly this time.