squeezelite shows up in lms settings but not in players

Hi,
i'm trying to setup a rpi 3 with squeezelite. My lms is on another pi and works with my other devices (sb boom, squeezeplay, ...). But i can't get squeezelite to play anything.
Squeezelite shows up in the settings of my lms (under players (I guess, it's in French)) but not in the control part of the lms, nor in my squeezer app on my phone.

Am I missing something really obvious or is something wrong?

thanks!