Not connecting from Xbox to Hyperion nog server

After installing Hyperion control on kodi running on an Xbox series X, Hyperion control correctly detects the Hyperion ng instance running in the local network. However it seems that after that, no connection is actually made. Also when I generate the token in Hyperion NG and insert it in Hyperion control, nothing happens. Hyperion ng indicates the token has not been used. What am I doing wrong?