installation diplomat optimum G2

hello,

i’m trying to figure out how to connect my freshly bought thermiQ MQTT to a diplomat optimum G2. The boards inside the heatpump look different from the ones in the installation guide:

https://photos.app.goo.gl/nfFvnko1kNzLVUGx9

i have the mainboard of the pump on the lower right, which then is connected to an “alarm” board (having a lot of IOs so i guess its essential) on the lower left over ext, which is then daisy-chained (i think) to a “comm” board (upper board) which has some unused IOs (evu, sink) and a connection to a thermia/danfoss online module.

i guess the comms board might not be essential since it has only the connection to the online module (DC/GND/A/B in the picture) and 230VAC.

so should i disconnect this comms board and put the thermiq module instead ?
how can i figure out the pinout ? the thermiq module has a “top” and “bottom”, but i think i’ll need a custom connector ?

Thanks
Greetings,
Frank