Why a few titles are not available (in grey) on PC and available on iPhone?

[Francis_France]

Plan

Premium

Country

France

Device

iPhone 6S, PC

Operating System

iOS 12, Windows 10

My Question or Issue

A few titles appear in grey (not available) on Spotify on PC (impossible to listen them). And those titles appear correctly on Spotify app on iPhone and I can listen them.

In the same way the same unavailable titles on Spotify on PC are no more available on Sonos controller whatever PC or iPhone.

See the 3 screenshots:

- Capture-Spotify-PC.PNG: 1 title in grey, can't listen it

- Capture-Spotify-iPhone.jpg: all titles OK

- Capture-Sonos.PNG: 1 title in grey, can't listen it