Please help – Call of Mini™ Zombies 2 Review

So I really like this game and it is my child hood and when you brought it back I was so happy and that everything is free but it won't let me buy anything for free I searched it up and nothing at all I download the game that we are supposed to download but I just don't get please help me and fix this problem but other than that I love this game
Review by XD yEeTeR on Call of Mini™ Zombies 2.