Hello everybody who still visits this site. Maybe you are interested in knowing what happened during these days, and why this time the forum didn't came back.
Now, the long story short, is like this:
My VPS (server) provider had some emergency maintenance like previous times. Sometimes these are just network side, and sometimes hardware side, when the server needs a reboot (like this time).
Unfortunately, this was a coincidence with a filesystem corruption on a hard disk of my machine.
Particularly this disk had a file containing the encryption passwords of the server hard disk, which I need at the boot time of the server.
Fortunately, after some digging, I was able to recover a copy of this file, and restore the server.
Maybe someone will ask about backups...
Backups of this file... no, I didn't had any to be honest.
Backups of the site, yes, I had some of them, but the last one was of a couple of months ago, because my backup script failed since that time (bad luck, again) and I hesitated to restore this old copy.
I apologize for this, and I hope to see you soon again here.