Why was Cronberry Rush removed from the App Store?

The best person to ask is the developer. The people on this forum are users like yourself and unless you are lucky and somebody else knows about an app of which I have never heard, you are unlikely to get an answer. Click on this link to learn how to contact an app developer - How to contact an app developer - Apple Support

This source is incorrect although Cronberry Rush is removed it is not because of the developer it was removed by a third party