Pig bank sync problem

Hi Poprish, 

I have a link that explains how the piggy bank works. 

https://care.king.com/en/blog/article/what-is-the-piggy-bank

If that doesn't solve the problem, can you check your payment settings in the play store and that you haven't turned it off. And if not, could you try the troubleshooting here please

https://care.king.com/en/blog/article/is-your-game-crashing-on-an-android-device