There seems to be quite a few problems going on with the GSP at the moment. I was asked if I'd post an item to the US, which I knew was included in the GSP countries I would ship to. That turned out to be because of the tariff situation in the US, but I was not aware of that at the time, so I was surprised that the buyer had not been able to purchase via the GSP.

I think if there is a problem with a country for some reason, the buyer sees a default 'will post but need to contact seller' message. 

I don't know what the problem is with Sweden, though!