it is with regret, but I had to temporarily shut down the DEMO. Due to total nonsense that my station was sending there were major errors on the page. It works slightly differently than the default template so it does not handle “offline” status same way as it would do on your page (without the errors).
At this point I cannot tell when it will be back up, could be tomorrow, could be in a month or longer.
No pages used by your pages (latest version check etc.) should be affected by this, just like the forum, downloads and main page, that is all working fine.