company of heroes notice could not verify media steam

When I try to validate using my Gold/Anthology disk, it is rejected. This was fine until I recently scratched the disk so it will no longer work at all. However, the only disk that will validate is my very first original CoH disk (as, I suspect, it is the 'main' product associated with my account). Now, when I try to play offline (which is about 50% of my gaming time), the game prompts me to insert the disk to validate. I re installed and added these two product keys. With the Gold/Anthology edition I got 2 product keys - one on the back of the enclosed OF manual and one on the back of the enclosed ToV manual. I have since (after buying CoH OF but transferring that product key to a friend - different story) purchased - retail - a copy of CoH Gold/Anthology edition. The product key for this is associated with my relic account. I purchased - retail - CoH and installed. I need to delete a product key from my account - not to transfer it or anything, just delete.

This is the question I posed on the THQ support website + emailed to relic: The game does not associate ToV as the main key for the user account or it is not recognised as the main product for the account because it was not the original install when the account was created.

Company of heroes notice could not verify media steam