They said BC Game is VPN friendly, so I assume that can't be your issue. Your issue might come from you making use of BC Game while you are from and based in the UK, which BC has closed their service with.
This is why it is always good for someone to always update himself with terms of services of every platform they are making use of. It could be that OP didn't know of this, because if he was aware that BC was closing their operation to UK customers, he wouldn't have find himself in this situation. But BC Game should have sent notifications to all their UK customers about their discontinuation of services in the UK, or they did but OP didn't get his or he decided to neglect it?