I enrolled in “Foundations of DataScience” Course on 30th January, 2020. I signed up on the website using my google account and today (29th November, 2020) when I tried signing in using google, I am getting “Your are not authorized to sign in”.
I was using a firefox extension - ‘Facebook Container’, which prevents activation of facebook trackers. When I activated the extension, I forgot to add padhai course website as an exception. And this corrupted the login page as, there is also an option for facebook login. I added the website to exceptions later, but my session was already corrupted. Hence, I had to disable to the extension. Restart Firefox. And, then I was able to enable the extension without any problem, as the website was already included in the exception.