sl remote doesn't work anymore and greyed out

Hy, hope you can help me!!!

I tryed everything for e several days now and I'm not that one who posts every little problem on a board!

So, I have a 16.0.2 studiolive mixer. Everything worked properly e few days ago. I can't control the mixer with my iPad on sl remote. the Screen ist greyed out. when I move the mixer, I can see the moves on my iPad. So the Coection seems to work. But I caot control anything with the iPad on sl remote. The iPad (sl remot) has the latest updates, also the mixer runs on latest updates (universal control 5798, driver version 4.2.1.46437). I work with a pc with windows 10pro and firewire coection. As I said, everything worked properly a few days (or weeks - don't know exactly) ago. And I tried nearly everything (uninstallig/insalling and so on....)

Pleas help my - I want to Play music again!!

Thank you!