Hi there,
Welcome to the forums and thanks for purchasing L2 clearance! I'm an Android user and what has seemed to work on Android in the rare instance this happens, is:
* Restart the device just to be sure
* Try to purchase L2 again, but stop at the last step.
* At this point Google verifies that you've already purchased L2 clearance and gives it to you.
I'm not sure if this trick also works on iOS.
If it doesn't you can always send an e-mail to
contact@subterfuge-game.com, please attach your iTunes receipt.