Am I the only one going “it’s Norway, just answer the door?”
Unless you’ve specifically made an enemy of someone crazy recently; it’s likely a salesman.
Y’all be paranoid.
This is a locked apartment building, solicitors shouldn't be able to get inside. The only other times anyone has ever buzzed our door before has either been my GF's sisters visiting (which follows a heads-up that they're coming), or a drunkard calling every apartment in sequence in order to find someone who'll let them in (the door buzzers are so loud that you can hear it when the neighbor gets called).
And it's precisely that; it's Norway. Direct personal contact is avoided at every possible opportunity. Door-to-door salesmen are abhorred on a cultural level and have been phased out due to nobody wanting to talk to strangers, let alone buy something from them. The idea of some strange person coming to your own door and talking to you on your threshold is the stuff of nightmares, not a keen way of getting your foot in the door.
But yes, GF is being a bit paranoid. But I'm not allowed to answer the door because she's afraid of what might happen or who might be there. It could be a forceful home invasion and one or both of us could get seriously injured, or worse, someone could see how messy it is in here and think poorly of our housekeeping capabilities.
Also the dogs will go flying out the door at the first opportunity if they think someone is out there waiting to pet them, and they need to be physically restrained.