There are a couple of things from this post (pinned to the top of the Relational Databases Certification menu) which you could try, which should hopefully resolve this:
- Load the course and click ‘Continue’ on the course completion message.
- Click on the freeCodeCamp banner at the top of the screen, to take you back to the curriculum main page.
- Click through to the Relational Database curriculum and then refresh the page.
If that doesn’t work, you can try generating a new user token by loading up a new Relational Database course and then exit and repeat the steps above.