Wiring setup for ggs with tent kit - missing cable or how do i add the 4th device

Finally got most of it set up, and cable managed - but i guess the kits had extra bits with them.

Since the controller only has 2 ports, but the setup needs fan+sensor+blower+light, it got messy trying to figure out how to get them all connected.

I assume all rj12 ports would work.
Exhaust motor to the controller port 1 (it seems to be the only device it gets power from).

Port 2 is light and fan to the special 2 way splitter and short cable to the controller port 2.

But where do i plug the sensor to? I can't use a splitter since there is no extra cables left.
4 long + 1 short. Was there supposed to be another short cable or something?

I can't use the light CH2 to pass sensor data to the controller either - controller does not see it.

Also, it seems i had leftover 2x M10?

And what about the 24h timer with one socket - isn't it all controlled by the controller?
And it seems like there is no mounting option for the controller to the tent - only wall attachment (that i'd like to avoid).