[Help] [Solved] Eaton UPS shuts off for 1 second when NAS is connected via USB

I bought a Eaton Ellipse Eco 650 USB DIN for my Homelab. I connected it to my nas which is running OpenMediaVault because OMV has a NUT Plugin. I conneced it, it got recognised and i thought i should test it. So i switched the breaker off and my nas turned off safely after my entered time. I then went to turn the breaker back...