Someone logged to my account/can't change e-mail and password

[user-removed]

Hi, 

yesterday I noticed that my spotify app started playing even though I paused msuic while earlier. As it turned out, some other device started playing music and it wasn't my device. So I logged on my account and disconnected all devices but that device logged on again. Then I wanted to change my e-mail address and password but my account was created via facebook account and i couldn't do it in my profile panel. I changed my e-mail and password to facebook account, I also added 2-step authentication but i still can log in to my spotify account by my previous e-mail and password. Today I noticed that some other device was connected to my account. What should I do? I don't want to lose all my playlist.

[SpotCreated]

If its a device such as sonos that is connecting, you can review and remove the device here: https://www.spotify.com/account/apps/ - if not, I would sign out of everywhere and change your password:

https://www.spotify.com/account/overview/

https://www.spotify.com/account/change-password/

[user-removed]

No, i've seen web player and phone. I can't change my e-mail and password as I mentioned in my post above.