What Happend??? – HMH Math on the Spot Review

I would rate the app as a 5 but I'm concerned with an issue. I been purchasing and using Math on the Spot for quite a while. I talk to everyone regarding how good the videos are. Recently I updated my OS and my purchases and choice area on the right side went BLANK. I lost my purchases and a good resource. HELP!!!This issue needs to be addressed.
Review by JMASIA12 on HMH Math on the Spot.