Same here for the last month or so. The issue happens with Firefox and Chrome in both Linux (LXLE) and Windows 7 that I use. No browser cache clear helps. Also updated the browsers to newer versions. No help.
Only way for me now to play songs add free is to use the Spotify Windows desktop client.
Indeed this is not cool. I've been unlimited subscriber for six years, happily, until recently. So please fix this browser add issue asap.
If you have an Unlimited subscription, you'll be able to enjoy Spotify ad-free on the desktop client only. For ad-free listening on mobile devices and in the webplayer, try Premium. You'll also be able to stream in a higher quality :)
Let us know if you have further questions.
Have a nice day!
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