I have two RPis both running Max2play. One is set up as a Squeezebox server, the other is running Squeezelite only. Without making any configuration changes to either, the client is no longer being seen by the server.
I have updated both to the current versions of the image and the server is running 7.9 nightly. I also updated Squeezelite on both machines to the current version.
The change that seems to have precipitated this is when I changed WiFi access points. This did cause the RPi some hassle, but it is now working fine on WiFi, yet it’s still not showing up in the Squeezebox server.
I think changing the WiFi access point does not cause this problem. But please try to add the switch ´ -S <severname> for the client in Audioplayer page, for the squeezelite player.