Spotify stopped connecting to my Echo

[blenci]

Plan

Premium

Country

 Italy

Device

Windows Surface 4 Pro, Sony Xperia xz1 compact

Operating System

Windows 10, Android 8

My Question or Issue

Spotify stopped connecting to my Echo today. On the Spotify app, both on Windows and on my Android phone, the Echo is listed as an available device. When I select it, it says it's connecting, but it doesn't connect, and after a minute, the "connecting" message just goes away. The Echo is still listed as available. Other echo-related apps are connected and working.

I disconnected the phone and tried reconnecting, but it doesn't help. I also restarted Windows. I checked my account, my Premium account is up to date.