"Premium users only" can't listen to Spotify via speakers

[CyJan]

Plan

Free

Country

Poland

Device

HUAWEI P9 lite, NAD c338

Operating System

ANDROID

My Question or Issue

I had been lisning to Spotify via my NAD C338 for 4 months without problems. I just loged in to my Spotify account on my phone and choosed my device and it worked with out problems. But 3 days ago I saw "Premium users only" below my device's name. Since then there's no way to listen to Spotify via NAD C338. Even in on my PC account I can't chose to listen to via my amplifier. Has Spotify changed something in their's free users policy? Or whats going on?

I would really appreciate some help. Thanks!

[user-removed]

Yes, some connection types require Spotify Premium. For example Sonos.

Here you can filter by "Requires Spotify Premium"

This devices also changed in the past.