patched ring.com app from Google play (.apk file) has bug and stops running on Z30

I have tried patching several times through the PS 1.4 and PS 1.5 beta without success. The patched .apk file installs fine on the Z30 but during its setup it suddenly hits a bug at the same stage each time (early) and simply stops working? I do have the Cobalt Blackberry Google ID installed and Google settings and Google account and modified Google Play store as outlined. Other android apps have installed and do run successfully such as Waze, Google Maps, Spotify. Not sure why the Ring Video doorbell app will not setup? Please help.