Jellyfin server from WiFi to Ethernet

[Generator]

You must log in to your router, assign a local IP to the computer.
When you get the USB to ethernet adapter, you edit the mac address from the Wi-Fi card to the USB to ethernet adapter, and maby, you will need to restart the router.

Or set a static IP on the laptop OS.  

My ISP router doesn't have a proper settings for static to devices, i need to set the static IP on   each device instead