So it seems I'm able to access it on Chrome. The problem may be with your wifi, some games have a hard time loading if the wifi isn't that fast, if that's the case, just try refreshing and refreshing.
If other games seem to be working I don't think there is a problem with flash. Though, in any case, make sure it is updated.
Has this problem been solved now @agdrew? This thread report seems to have been buried in the vast amount of threads being made recently, sorry for that...
I will callout @Ferret to this as well, since he was the one helping you with the problem in the first place!
@Agdrew Could you do me a favor, could you try an "Incognito" window in chrome, test logging in to the site and hitting the page. If you get the error, or white space, please take a screenshot and post it here. Would help us a lot!