No sound at all- pls fix!! – Daniel Tiger's Grr-ific Feelings Review

Please fix, there is no sound at all. Tried all of the recommendations for "no sound" but nothing works. Kids excited to play. The iPad volume is turned all the way up and all of the other apps have sound. Please fix ASAP or refund $$. Thanks
Review by m&elove on Daniel Tiger's Grr-ific Feelings.