Thank you for downloading and making us the best app for learning ASL.

Please Note: When you're downloading the lesson packs, if you lose internet connection, the lesson packs don't properly install and you end up with the black screen.

If this happens, you can simply delete the app. Reinstall it from the app store, and hit the Restore Purchases button. When you are re-downloading the lessons, make sure you have a strong internet connection.