Forest Sprite

Hello, I am new here so look forward to talking to you. I just bought a 2015 Forester. The satnav map is out of date so I went online to the main website and when I tried to add my Vin to the page it says the Vin is not recognised. I then tried to send proof of ownership to overcome this issue but the website will not allow my postcode because it is British and not American or German. Can any of you lovely people help me please? Many thanks in advance.