Thanks for getting back in touch with this update.
In this case, could you make sure you have a registered Sonos account and Spotify added as music service on your Sonos system?
If it still does not show up in your original account, double check that you have enabled ‘Control Sonos from Spotify’ in the Sonos app under settings (this is part of the “Control Sonos from Spotify” in the Sonos app (only shows up if it is not yet enabled).
Let us know if that does the trick 🙂
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Given that it worked when you tried it with a different account, we suggest that you use that account instead.
To transfer everything from your old account to your new account, you can follow these steps:
Make sure all your playlists in your old account are set to Public. You can also make a playlist called Your Music and copy all your saved songs there.
Once you've confirmed all your playlists are public, log out of your old account.
For the next steps, we'd recommend using a desktop device:Log in to your new account and search for your old account's profile. You can do so by typing spotify:user:username in the search bar (you need to replace username with your old account's username).
Once you've located your old account's profile page, head to the tab Public Playlists. All your playlists should be displayed there.
Click on a playlist.
Once you've opened that playlist, select all the songs contained in it.
Right click the selected songs and click Add to Playlist > New Playlist. This step will create a new playlist to your new account containing the same songs. You can name the playlist the same name it had on the old account if you wish, or give it a different one.
Repeat for all your playlists.
Let us know how it goes, and if you need any further help, we'll be right here 🙂