[to be continued..]

Yesterday's interaction with the authorities has been brief and unsatisfying; after the compulsory (?) 1h wait, I was sent back to procure 'the original' [i.e. a new document] certifying that my parents agree that I live in their house. And this, my friends, might not have been much of a big deal if the starting situation had been different. But as we stand, and as I've explained the lady behind the desk several times, it's the exact same office of the authorities that owns 'the original' certificate, which I had given them 4 years ago, for pretty much the same reason: new Id request. And yes, I find this absurd: Do legal acts stop producing legal effects once the original document had been archived? Because I'm not convinced by this point. If the time duration of the named certificate is unspecified, shouldn't this suggest that it produces legal effects until revoked? Or something along those lines?
Yes, I was angry. I still am, for that matter. And yes, this is still absurd to me.
Do tell if it makes more sense to you.