If it was clear cheating, the ban would be the easy solution. So -->
As Nordeus has not banned them immediately (comparing with "VPN case") they accept it is not cheating and they are banging their heads that someone find a way to exploit their own rules. So -->
They try to find a way so people wont exploit further more the system. So -->
No ban - No star reduction - Exploit wont be feasible anymore.

This is how I think it will go ...