I had a similar issue of my peripherals not being detected. I was able to simply unplug the dongles and plug them in to other usb ports then toggle the power on the mouse and keyboard and everything was immediately detected.
Never underestimate the power of turning things off and on again lol
Really wanted to like Jellyfin but it just can’t replace plex yet for me. Once it’s developed a little more I’ll definitely take another look since plex is shitting the bed.