Excellent app but sound doesn't work anymore – Touch and Write Review

My child's occupational therapist recommended this app, and it has proven to be effective. Kids think it is fun. But I believe after I installed iOS 7, the sound no longer works; the cute music no longer plays, or we are unable to hear it. I have another iPad and it does play on that iPad but strangely enough I loaded iOS 7 on that iPad too.
Review by CSL7733 on Touch and Write.