ROON and SONOS - audio devices are recognized by ROON, but it's not possible to start playing music

Hi everyboby

System
My rock 1.8 (build 898) in the free trial version is running on a Dell mini with roonOS .
My mayor audio device is a Nubert ampX, connected by USB to the Dell and working great.
The sonos devices linked via home network are a connect (~ 8 years old) (zone 1, ethernet)
and 2 paired Play:1 (~5 years) + a Sub (~ 1 year) (zone 2, wifi).
The router is an AVM fritz!box 7490 (very common in Germany).

issue
The Sonos devices are shown in the audio device list of roon, enabled as well. When chosing one of them in the device picker, there is no way to press the play bottom (which is grey, not black). Same appears when chosing my iPhone or iPad as an audio device, but they serve well as rc.

Would be great to hear what’s wrong with my setup.
Thanks in advance

Have you selected any tracks to play? Select track then choose Play.

1 Like

A track is already selected

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