Customization Not Working

I bought this app because Mini Adventures - Lets Go has not been updated to support iOS7. The app has a feature that allows you to customize (add/delete/edit) your own catergories and videos, which was the MAIN reason I purchases the app. However whenever I want to customize (add) anything the app completely locks up and is not responsive. Unless this is fixes I basically threw my money away. Would be 5 stars if this worked.

Jrob0124 about ABC Animals - Your Alphabet Letters Mini Adventure