In their TaC in paragraph 39 it is directly written about the prohibition of using VPN, the wording is of course somewhat confusing, but as I understand it, everything that the client has contributed and won after starting using VPN will be withdrawn from his deposit.
The wording of the paragraph is indeed confusing. It doesn't say that using VPNs is prohibited, per se, or that it may lead to the suspension of the account. As per my understanding, if a user is caught using a VPN or logging in from a different country, all the bets he has made since his IP changed will be voided and the money will be returned to him in case he logs in from the same country IP he created his account with. I may be wrong though.
I believe you quoted the wrong paragraph.