Olav?

When you set up your add-on (in the VH cPanel), did you type in multiflix.anitainnorway.com?
You need to simply go back in, remove the add-on, and re-add it:
>> Click on tte "Add-On Domains" icon, not the "Sub-Domain" icon in the Control Panel facepage....
1. first box: multiflix.no
2. second box: multiflix
3. User Name
4. Password

Since your DNS is properly pointed, your domain will now be found as simply as a "part" of your anitainnorway account...not as a sub-domain as you now have it set up.

Yes, I have been to Norway....when I was 16, I spent the whole summer travelling (alone), and i Norge from Bergen to Kristiansand, and visiting family in Drobak and Tofte/Filtvelt.
An experience very few get a chance to, and one that enriched me forever!

Versa godt!