Hey there @MegW,
Thanks for reaching out to us and welcome to the Community 🙂
We suggest following the steps below to unlink your Spotify account from the Alexa:
- Click on Settings in the Echo app to unlink a Spotify account.
- You'll be asked to confirm you want to unlink your account.
Once you've unlinked it, try linking it again to the speaker.
If that doesn't help, make sure you reach out to Amazon. The folks there can take a look and help you further.
Keep us posted! If you have questions, you know where to find us.