Hey, @lieblinsziecke
Welcome to Spotify Community and thanks for reaching out here!
I hope you don't mind I'm answering in English...
First of all, you need to break the current connection between your Spotify account and your old Facebook. After that, you can link your Spotify account to the new Facebook profile again, following these steps.
If you have any other further questions or need more help, let me know! I'd love to help!
Best Regards,
hezorg
Hey there you, Yeah, you! 😁 Welcome - we're glad you joined the Spotify Community! While you here, let's have a fun game…