We understand your concern and regret for the inconvenience you faced, this could be due to a number of reasons.
As of now, you can check for these things.
1) We request you to please clear the cookies which might be one of the reasons for that.
2) Make sure to update and enable flash player in browser settings.
3) We suggest you use the Google Chrome browser for better results.
However, if you still cannot resolve the issue then take a screenshot of that page and revert us back on firstname.lastname@example.org we will try to solve the issue within 24 hours.(If need we can also provide remote support)