Hi there, sorry to hear you're in such a stressful situation.
I think the site in question is probably this one based on what you were saying. By doing a site: search for that site I can see pages appearing, so I think it's unlikely that the site has been removed from the index. However, I can see that if I turn off JavaScript on the homepage it is pretty much blank and is canonicalised to another page - bedste-kontorfaellesskab-koebenhavn-k/
That page in turn redirects to the homepage, that's going to be giving Google some pretty confusing signals about the site - with JS off it looks like the pages are blank and canonicalised to a redirecting page. I'd definitely have a look into that.