Hello,
A small number of users are reporting an issue downloading content after an InApp purchase.
Please do a Hard Reset on your iOS device (Hold the power and Home button down until you see the Apple logo)
The re-try your purchase. If it asks you to purchase again please do, BUT be sure to use the very SAME iTunes account and you will NOT be charged a second time.
Next, go to Settings, make sure your Name, email, Portal Username (first.last name all lower case with a period) and a Learning Center code of 0000 or 9999 (unless your flight school or University issued you another code.
Restart the applcation , try the purchase one more time.
If it fails please email: enroll (at) enldev (dot) net with your Portal User Name and they will activate you from this end. Be sure to include a copy of your receipt from Apple. You can find this in the iTunes store under Purchase History.
It will take about 30-45 minutes for our enrollment group to provision your device after verifing the Receipt with Apple.