I can only playtest base cards, as I can not open tables with expansion. I alsways get the "You don't own the selected cards." message when I try.
Is this a bug or intended feature? ;)
Relog, it will be working fine :)
Same problem. I just logged in for the second time.
I have this problem as well. Logged in at least twice, but it didn't help.
Sorry, since our signup process is currently broken, and I don't expect to get that fixed before tomorrow evening, new accounts will only have the base set.
I just (10 min ago) handed out the other expansions to all active accounts though. If you log in after that you should be ably to play any kingdom.