Most of the time this happens when your browser is caching credentials that are different from what you use to login to your Glitch, Gmail or GitHub account.
- Typically, clearing your browser cache will fix the error.
If that does not work, try logging in from a new incognito (or private) browser window.
- If you are prompted to check your email inbox to confirm login, be sure that you do this in an incognito (or private) browser window as well.
- If you are able to login via the incognito window, you should set up a password for your Glitch account. Using a password will prevent you from having to use an incognito window to login again in the future.
If neither of these solutions work for you, please contact Support so we can help you further!