Tried to start 2D with firefox for my league race this morning and it didn't load up, just a blank screen.
When i logged into iGP from IE it gave this message: Internet Explorer blocked this website from displaying content with security certificate errors.
which i had to select "Show content" for 2D to load.
Don't know if this is a common issue or something on my side but i was only able to get it to work in IE.
Firefox wont load or give that error message so maybe an option in settings for firefox to ignore this certificate error.