This is a bit hard to explain, so please bear with me.
For every deck that I bought, the game locked away 10 cards, and it told me that the only way to unlock them was to play and win matches (presumably online matches, as I've finished the original and expansion campaigns and I've received no notification of unlocked cards).
The strange thing is that, quite oftenly, upon booting up the game, the 10 cards that are locked in every deck are completely vanished. Gone. Nowhere to be seen. When I go to the deck manager, every deck tells me that it has 30/30 unlocked cards. When I select any of these decks to manage, the on-screen information tells me that there are 0 locked cards. But clearly, there must be something wrong here, because other times, I'll see that the decks have 30/40 cards unlocked, and if I go to the deck manager screen, the information tells me that not only do I have 10 cards locked in every deck, but I can even select these cards and zoom in to view them in full detail.
What's going on? Is this some kind of bug?
Also, here's a more minor complaint: the video settings won't save all the time. I set them to the highest resolution, yet some times, the game starts with a lower resolution. Not all the time, though. How do I fix this?