It is not "mining" app. It is game app with random numbers of "hashrate" and "net difficult". Waiting for "block 100" and claim reward. Based on how many you push the buttom, you will get tokens. Sometimes app forget your ETH address and you need to begin from zero. My rating - 1 star in google play. Because of lie to your users.
I have nothing to do with this priest but I deleted the app and reinstalled it out in the same eth address and my balance remained the same so the balance does follow your address. Just saying.