Wiring Bitron AN0002

I am having difficulty with the above. The current wiring of the handset is shown below. I have ignored the mis/speaker wires as they are working fine in the app.  I can get everything to work on the ring intercom other than door opening. When I try to open the door via the app, the buzzer sounds. I currently have the door open wire of the ring into the unlock port and the neutral into the neutral. Can anyone help?