I'm in a similar situation where I'd like to know the email associated with a Premium Family User. I set up a family member account for my 3 year old daughter and I can't recall the email address I used for her, so I have no way to log into her account on any new devices.
I don't really know how it'd be a security threat to allow the plan holder to know what the email address is of other people living at the same address... But I can accept that it's a privacy thing.
I can't find the email saved in any of my password managers unfortunately.
I have downloaded Spotify Kids to my phone for my daughter to use and it is nice, but there's a major factor lacking from it - on iOS at least, it can only cast audio to Airplay devices. While I have Airplay devices throughout my home, in the room she plays in there is a TV with a Roku that she listens to music on, and only the regular Spotify app can cast to that via the Spotify Roku App. Is there plans to add support for Spotify Kids on the Roku app, or a develop a standalone Spotify Kids app for Roku? Until then, I'm stuck streaming my daughter's music through my account and screwing up all of my auto-curated playlists unless I go through the steps to start a private session every time which is cumbersome.
Thanks for coming back to us and describing the situation so well!
We understand where you're coming from and will make sure all your feedback reaches the right teams. We always aim to improve and you can be sure that your voice will be heard. You can also create an idea on our board that request Roku support for Spotify Kids. You can learn how to do this here.
The Idea Exchange is a great way for us to keep track of what changes our users are interested in and how popular a certain idea is. This page explains how exactly your feedback reaches Spotify.
In the meantime a workaround that might work for you is to remove the old account from the family plan and create a new one, which you can use in the room your daughter plays in. If you've found the username of the old account you can transfer it's content using the steps here, so that nothing gets lost 🙂
Hope this helps. Keep us posted if you have any questions.
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“Music is a language that doesn’t speak in particular words. It speaks in emotions, and if it’s in the bones, it’s in the bones.” - Keith Richards