Google being Google. I've reported the app to them and this is the reply:
After further investigation into the com.acideapestudios.acidapechess.gme app, we were unable to identify a violation of the Google Play Developer Program Policies.
Apps that crash, do not have the basic degree of adequate utility as mobile apps, lack engaging content, or exhibit other behavior that is not consistent with a functional and engaging user experience are not allowed on Google Play.
After further review of the information you provided in your appeal, we were still unable to identify a violation of the Play Developer Program Policies in the com.acideapestudios.acidapechess.gme app.
If you are located in the EU, you may have additional redress options. Learn more about those potential options here. Routing ID: EDVX