From what I can make out it seems as though something went wrong with the server that it was on, though what the delay with getting it back up is I don't know. Someone on the 68k Facebook group, which I'm not a member of but have been keeping an eye on for news of what's happeneing, said that another site they know of went down on the same day as it was on the same server, which seems to me like quite strong evidence for that cause.
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