Great game but ... – Add & Subtract with Springbird HD - Basic math game for kids Review

This review is by my 6 year old daughter. I like the game but when I earned a bird named twinky. She was not added to my treehouse. When my mom tried to buy it. There are no options to buy the rest of the game. I would like this fixed so I can get my bird.
Review by scoullides on Add & Subtract with Springbird HD - Basic math game for kids.