The game doesn't save after showing save successful. I can visit oracle for a new card and the card will be disappear after I re-login.
I'm having the same issue.
It seems that the settings save (quickplay, animation speed, etc.)
But the currency, score/win/loss stats, and cards do not save. When I go to the deck selection, it says I have 0/0 cards, so I physically cannot play the game.
I just logged out and logged back in, and now it's making me choose a starting deck again, all of my progress has been lost.