SCAM! InApp Purchases are broken, don’t buy!
EDIT [29Oct2019]: I have sent the relevant details to the developer over email as per their request. Awaiting their response, hoping for redressal. I purchased the Double XP boost via an in-app purchase, and the payment went through, my card got charged. I even got a pop up notification saying, “You’re all set” after the purchase. But the item was not acquired! Even when I try “Restore Purchases”, nothing happens. Until the devs fix this and restore my purchase, I’m treating this as a scam, and warning people not to make any IAP in this otherwise fun game.