Widevine is installed and enabled on Addons manager as Spotify documentation shows. But spotify still redirecting me to a page with a link to the support page. It is not working.
SO: Opensuse Leap last version
Firefox Version: 60.0 (64-bit)
Having exactly the same problem. Widevine enabled, using OpenSUSE Tumbleweed with firefox quantum 60.0, and exactly being just always shown that same screen.
This is happening for me with Firefox 60.0 (64-bit) on Ubuntu 18.04
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