Tvheadend

Hi forum! Novis here but decided to have a go after all. I've installed TVH on a Intel NUC with Ubuntu 16.04. As tuner I'm using a HDHomerun Expand (EU version). One of my issues is that the the HDHR is lost under TV Adapters when i restart the NUC. Restart TVH and everything is back.

Is this just a bug in the above combination or have I done something wrong?
Is there a special install for THV when you want to use it as server?

My intention is to run TVH on the NUC as backend and use two RPi's with Kodi as front end. Any advice is appreciated.