Their home page just seems to be a static html file which is still online as I'm writing this. There was briefly an error message from ddos-guard.net saying the website owner should contact them. I went to ddos-guard.net and spoke with someone on chat. They said their bill wasn't paid. I offered to pay the bill myself to get the website back online and they wouldn't take my money. I even asked them to put the website back up for a short period of time so I can withdraw my money and they didn't want to do that. Now I don't even see their error message.
Before today I just thought their website was going offline because people kept clicking refresh to watch their balance grow.