Arming via keypad not possible

[m4v3r1ck1]

Hi,
I have downloaded the latest blueprint for Alarmo. The communication between Alarmo and the Ring Keypad V2 should work as I receive all the information of the security system state on the keypad (controlling the system via phone). The only issue I have is that I can not arm the security system via the keypad directly. I am inserting the code and then press „armed away“ button, but I receive only a fault signal sound. I have also traced the z-wave events and it seems the correct code is transmitted in the event_data field, but after I have pressed “armed away” the event_data is set to “null” and again I receive this fault sound.
I hope you could help me.
Thanks and best regards,
M4v3