Hi there @KaramEllen,
thanks for reaching out about this !
Please check out the steps provided on this Ongoing Issue.
Furthermore, i recommend subscribing to it to be updated on any upcoming changes.
Another simple step you can perform is to go to your Settings > Display options > Show Friend Activity and toggle the setting off and on again.
In addition, you can try logging out > restarting your Mac > logging in again to make sure everything is synced up.
Last but not least, if none of the above had helped, you can visit this Spotify Answer for further instructions.
Hope this helps.
Let me know how it goes 🙂
I had the same issue. The sidebar was gone even though the feature was turned on in settings. Toggling off and on and restarting the app brought it back. I use Windows 10.
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