>>rvnx+o2
This is an infuriatingly poor error message if the problem is disabled JavaScript. Surely they can detect that and show a proper error instead of trying to be cute with this "Your browser is a bit unusual" junk?
>>alias_+44
It's hard to differentiate between completely disabled JavaScript, some individual JavaScript files being blocked by an (overzealous?) ad blocker, and the browser not implementing some required JavaScript feature.