Not working with Lumin 6.1.17 control point on iPad

Very impressed how easy installing Volumio on a RaspberryPie was and took next to no time. I have minimserver running on a Synology NAS which works great. If I use Kazoo for the control point it works fine and Volumio plays music via Wi-Fi no problem. If instead I try to use Lumin control point, it can select the player Volumio but cannot send any music to it.

Others on this forum suggest thsy have Lumin working, anyone got a suggestion why it’s working for me?

Thank youi.