I'm guessing they got hit by their website hosting provider or something? Since afaik Freebitco.in doesn't have Curacao so that can't be it, and they've been able to be KYCless for so long after all. That, or they're trying to expand their site so they're building a foundation around it. Guess there won't be a KYC-less site in the long run like this one did.

Just to add, according to the terms they have (idk if its new, I never read them before), any account that was inactive for 12 months would be deactivated. They can email them back though to reactivate it if they ever wish to do so.