XR Interaction Toolkit - Controllers not getting Tracked/Moved

I am just getting started in unity VR development and i am using the OpenXR Plugin (1.0.3) + the XR Interaction Toolkit ( of course i also have the XR Plugin Management and new Input System). That actually worked out pretty well for me, until the controllers(knuckles) just didnt move anymore. The Headset(Valve Index) works totally fine. What I tried: -Basic stuff like restarting PC and all -creating a new Project and freshly installing all the packages and configure the settings and just create a new XR Rig ==> same problem

Cant find much documentation and threads about this stuff, because its pretty new i guess. I was thinking about just switching to VRTK.