Ring Doorbell Autorisation button not working

The original dev has stopped supporting the app as he no longer has a Ring product and is disheartened by all the negative reactions from users when it stops working because Ring have made breaking changes to the unofficial API.
So either someone has to take it over or Athom has to adopt it before it can be republished. So there is a possibility that it will not return to the app store.
It is not an easy task to take on the responsibility of keeping an unofficial interface going as we never know if the rules will change again.