OK...so I just finished completing unlockable puzzle #5 (Very hard) after buying it from the shop. To my surprise, I received no Boffin medal for my efforts. I've completed all the puzzles (1-25, very hard 1-5), and I even re-completed the last 5 unlockable ones just to be sure. I've triple checked every puzzle without any results. Still no medal. Any ideas?

Wow. That's awful. I won a game online from a completely disadvantaged position and I didn't get the medal for that.