App isn’t working properly – Coin Mania: Ninja Sakura Dozer Review

When my daughter and I were playing the game we would be able to watch a video for a free gem and once we watch the video our screen goes blank/black with the game still playing in the background. We would have to get out of the game and restart it every time.
Review by Sheila lala on Coin Mania: Ninja Sakura Dozer.