I just did the only thing left i could do.

I removed the trigger cable from g65 to front left master dsp5200se that was required to make this setup work when using the 218 and now all the speakers work.

Why does the 218 have options like Eba, treble bass position room height etc and the 210 does not?

Is it because 210 is a streamer and 218 is designed to be used instead of g65 with lots of inputs?

Does the 210 simply pass the SL data to the DSP speakers raw without interfering?

G65, HD621, 5x DSP5200SE, MC200.