Only opens via app if buzzer pressed first - Ring Intercom & Bell 801

Hi there Just installed the Ring Intercom. Conected to a Bell 801 intercom system using Wire set A. There is a buzzer outside for my flat outside the front and back doors. So there is a 2 door setup. Everything looks fine apart from one issue. I can only unlock the door if the buzzer is pressed from the outside. This seems to be the case when testing the front door and the back door. But if just using the app to unlock either door without buzzing first the door does not open regardless of the app notification saying the door is unlocked. Is this to do with the Ring Intercom or the Intercom system in my flat or to do with the two door setup. Or just not wiring something properly when i installed the Ring Intercom. Any info would be much appreciated. Thanks