Translation:

Sonos refuses to add France inter to favorites. I can no longer listen to France inter while I'm waking up.

Response:

What is France Inter? Is that a radio station, a streaming source, part of the Sonos ecosystem? What error are you getting, and where does this error occur? 
 

Translation:

Qu'est-ce que la France Inter ? Est-ce une station de radio, une source de streaming, faisant partie de l'écosystème Sonos ? Quelle erreur obtenez-vous et où cette erreur se produit-elle ?

Thank you for your message

France Inter is a French news RADIO, part of a service called Radio France.

I can listen to it but if I try to add to Favorites the message is impossible to add to Sonos Favorites, therefore I cannot use it as an alarm

Is Radio France part of a Sonos service? TuneIn, perhaps, or some other ‘radio’ service? Or are you adding it to your Sonos using the setting up an internet radio station FAQ?

Have you called Sonos Support to discuss it?

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.