Welcome to the Kölschbierbude.
Great that somebody from the other side of the globe would like to go here along with us.

Nobody wants to say you're cheating.
GTR2 is known to be in the online mode has this, let's say, error.
This happens to everyone at some time.
If just you wanted to drive the cars from the WTCC mod on Server 2 or 6, there's a little problem with the Addon skins from the 2007 cars.
The other servers should work without major problems.
A solution to the problem is already being worked on.
In the meantime, you can choose the WTCC 2006 cars or the Vauxhall Vectra or the Volvo S60 if you want to drive the WTCC cars.
These should work.
Or you try your luck on one of the other 4 server.