Generic Analoge Ring Detection

@Panda
Dont mind the cables there, i took the Pictures when initially trying top Install via nuki generic Bus procedure. Just wanted top know If the Spot i labled gnd ist really ground and thus should bei connected to black& purple. And If the circle closest to the “Opener Pin” should be connected to the blue cable.
Because thats how i have it at the moment and it doesnt work.
Can Take Pictures of the actual new wiring as soon as home later.