Adding www to store name causes page-not-found for everything

[hubbobubbo]

Hi

 

Currently my store name is not using www in front like this mystore.com but I would like to have that so I have changed this in the backoffice to www.mystore.com. Now when I enter the address I can see that I am redirected to www.mystore.com so that part looks correct but all the pages jsut return page-not-found.

 

Entering for instance mystore.com takes me to mystore.com/en/page-not-found and all links in the store behaves the same.

 

Are there any other steps needed to be able to change the Shop Name to use www in front?

 

Thanks in advance