Media Renderer Events: Sonos no more available!

My Sonos devices aren’t available anymore since some days/weeks in the settings of the app. In the old app it says “There are no devices of this capability” and in the new app the field “On this Speaker” is grayed out and not clickable.

Does anyone know how to fix this?

Are you using the new Sonos integration? If not delete your Sonos devices and set them up again using the new app integration.

Thank you for your advice! I did that, but nothing did change…