My issue is like this: some of my cards are missing entirely [can't be found even if selecting 'cards not owned' when looking at collection]. However, my decks that had the missing cards are still functional against a bot, but can't be played anywhere else, not even in timeless, the cards are functionally missing/banned. I can still play my decks against sparky but I wouldn't be able to do anything else, nor make any new decks.