when you look at the posting construction it's very obvious that op have existing account
But of course, that's very obvious and literarily visible to the blind. I won't even be surprised if it's discovered that the OP is in an existing campaign run by Hhampuz.
I'd rather say someone who was in a campaign managed by Hhampuz but was kicked out, or someone who tried to get in the campaign and wasn't accepted. It seems to me far more likely.