ejabber installation on ubuntu 12.04

Hi i recently installed my ejabber on my dedicated server. Let me explain all steps

1. installed ubuntu 12.04 on my dedicated server
2. installed LAMP on it
3. Installed ejabber
4. Configured the /etc/ejabberd/ejabberd.cfg

%% Admin user
{acl, admin, {user, "admin", "mydomain.co.uk"}}.

%% Hostname
{hosts, ["localhost","servername","mydomain.co.uk"]}.

5. then created user

sudo ejabberdctl register admin jabber.mydomain.co.uk xxxxxx

all worked fine then i restarted the ejabberd server also

now when i go to http://mydomain.co.uk:5280/admin

i cant see anything

what should i do to get it up. Sorry if its a easy one but i am really new to ejabberd