I am not able to put image transmission setting to custom, this is grayed out. It only stays in auto. Is it due to the region? I am in the netherlands. And is it a problem not be able to use custom setting here or doesnt it make sense anyway here and is auto ok. I can switch the ghz but can not alter the mbps.

I have had no issues with that on the Androis version running on the built in screen and i think there would be no big difference of that rules within EU.
Did you have AC on and connected and did you have the problem with other versions of the app?

I found out if you change region on ipad for example usa than you can go into custom setting. So it has got to do with being in europe