Vaccination Pass (yello Book) and vaccination certificate from Europe. That's what they like to see. And if you not fully Vaccinated, then they will see an PCR-RT Test or a professional ATK Test with certificate, home ATK is not allowed
But of course it made sense to ask if the 1.6k on the account isn't better and cheaper than the elite visa. That didn't answer the question about the overstay, but it didn't miss the point.
Finally a sensible answer. 😉 Shall I now explain to you what I have to do? I just think it's stupid to just answer "what". What can just mean everything and is relatively inappropriate. And his answer or question was correct.