Valet Hero has achievements for collecting all keys at each of the first five levels. I unlocked four of them, but I'm still missing the achievement for the very first one: Driver's Education.
Normally the achievement pops when I get 4 stars on the bronze, silver, and gold challenges. I have that (and 38 cars parked in marathon mode), so I'm not sure what I'm missing.
Is there anything I can do to get the achievement or is it permanently glitched?