Starting October 23, 2023, Google's Workspace for Education product will be updated to require all third-party apps to be approved by IT admins before students under 18 can continue to use them.

If you sign in with Google, you may see an error saying "Access blocked: Your institution's admin needs to review Kahoot". There will be a "request access" link you can click to get this process started.

For a full guide and FAQs, please refer to Google's support article about this.