Problem for different ip hosting

[Claymenia]

HI, i'm new on vestcp, and i try to attribute a different ip by website hosting.

I've added my ip with mask 255.255.255.0 and no shared it, dedicated to my user and my website.

I see ip in list, but when i go in my web hosting, i've just my dedicated server ip shared, not my new ip.

In /etc/network/interfaces my ip appear...

Can you help me ?

[Claymenia]

OK i see the problem : my user was created after my domain and ip.

How i can attribute my new user to this websapece ? (change hosting owner ?)