Sounds like he COULD be missing the files needed on wermacht and us.
I had a same type of problem not long ago. I suddenly "missed" wehr and us campaings/sounds/etc and was unable to play with em. I just reinstalled the whole game, made sure everything was in and vóila, works.
You should tell him to try reinstalling
Sounds harsh to install CoH but he is perhaps forced to do so, It ainīt a small game and it used to work before. But ye he must perhaps do that.
DId he give his OF cd key to someone else?
No, he is the only that have used his discs/keys.
Its also strange that it tells you to purchase ToV Instead of CoH, which in you gain the access to wehr/US.. So i would recommend trying out what i, and baine told
Ye, I reacted on that to, sounds strange, but it is perhaps THQ advertising