Just go to our Pre-Sale Launch Page and click on the Green "Purchase Details" button.
I have been attempting this for half an hour, the page just re-loads.
I just tested using your link and everything worked fine. It sounds like you're just cached. First try closing and then relaunching your browser and see if that helps. If not you will need to clear your Browsers cache. If you need help in doing this just let us know and tell us which browser you are using?