I can offer you a refund if the account gets closed, make me an offer.
Actually, you have a good offer, but i'm just worried about if the admin detected that the account recently changed password and used on new IP, I think they will question that action and it might ban the account because it has a good reputation and it might use on scamming.
I've used the acc on multiple IPs in multiple countries and I've never had a problem. HF does not have any kind of ban system based on IPs/cookies.