Nope, that didn't help. I have a hypothesis that there's something wrong with my account. Look, there's no connection to Codeacademy:
And there's internal server error (see that white dot? It cannot connect):
I've tried to log out, cleared cache and cookies and I still get all these errors. Yesterday I was trying to start the course at home and now I am struggling at work. Computers and browsers are different, only my account is the same. This must be it.
P.S. I've asked my colleague to check out the course from his account and everything works for him just fine, but he still gets TypeErrors when he hits [Create] button (see the second screenshot from my previous post)