Cant get in app purchases to play

Its a great relaxation recording. Puts me to sleep and calms me completely. However, i bought 5 in app add ons and i cant get any of them to play. No matter what i do i can only get the original relaxation recording. At 4$ a session, Im rather disappointed and hope they fix this....

Julie p 2011 about Reiki Relaxation Hypnosis, v1.400