Playback problem with 4G network

[Palix]

Plan

Premium

Country

Italy

Device

(Huawei mate 10 pro)

Operating System

(Android 9)

My Question or Issue

It's since yesterday that I've encountered some issues playing music under 4G network. The network is fully functional on other apps, only Spotify seems not working. The problem is not detected by the app because I don't get any offline alert, after few songs it's simply stopping without any other signal, if I skip some songs maybe restart but after 1 or 2 minutes same issue. No issue appears over wifi network. Already re-installed the app and deleted all files related on the memory. 

Thanks for the help

[Palix]

[update] 

Seems the problem is in the regulating filter in the Vodafone IT network because with a VPN the application works fine.