I purchased additional package for ASL Kids and now it is stop showing up – ASL Kids - Sign Language Review

I downloaded the ASL Kids app and then made a purchase of the additional ASL sign package. It worked fine for a couple weeks and when we login today the additional package is gone and the only the basics are showing. I would either like a refund or like to have my additional package I paid for reinstated on my iPad. I would preferred to have the additional package reinstated since my grandkids are enjoying learning ASL. I cannot find a restore purchase link anywhere on the app please let me know where this is located or how I can restore my purchase then I would gladly update my review
Review by BacaUtahJack on ASL Kids - Sign Language.