WHAT HAPPENED TO THE RESTORE PURCHASES BUTTON? – Gymnastic & Dance Girls Game Review

I used to love this game. I had to delete it because of lack of space. I was just going through my deleted apps, and I re-discovered this app. I downloaded the app, and then I tried to restore a purchase that I had made before, but the "restore purchases" button had disappeared!! Please fix this!!!!!
Review by Pink+purple :) on Gymnastic & Dance Girls Game.