Playing from iPad 2

On normal difficulty

On successful completion of questing with a level 3 dwarf archer and level 9 assassin chick, cleric chick, Mage chick, the black crusader, and beast girl.

I am able to select any of the rewards available for leveling my new archer up to 3, then whichever character I pick next to receive their card reward ( level 8-9) the card flies up on the screen and is uninteractable. Also the front card reward I had received for the archer disappears and leaves behind its pulsing background animation.

work around (answer was given in a previous post, so I can't take credit): select the reward for you lower level character and then, before pressing the accept button (green, I think, on right side of screen), select a character that hasn't received a reward and THEN press the accept button. Cards should appear and stay around