MISSING or LOST Model ??

Easy.
Write to support

Yes it can happen, sometimes it is just maintenance and then it shows up again, else Dust is right just let the Cgtrader team know they will help you.

thanks you all. Let my try to contact the support.

So what support said to you?
My models disapier too, what was uploaded in last 6 days ..

They said my model was reported by someone, but now my model was back :)