If on the login screen you see the message " redirecting" and can't move on:
1. Ensure you're at the correct url by typing https://mod.learntomod.com into the url field.
2. Are you using Chrome? In Chrome settings under Privacy, click "Content settings". If "Block third-party cookies and site data" is enabled or check marked, then login problems will happen because it authenticates at herokuapp.com instead of your domain.
3. Clear your cookies
In Safari, here's how to clear your cache and cookies: https://support.apple.com/en-us/HT203370
4. Open an incognito / private tab in your current browser or switch to a different type of browser.