client's dashboard tab says domain.com - wordpress

Hello,

I have to ask this question yet again because your support guy who had taken my question has not yet replied. My question is:

I wanted ultimate branding so when a client logins to wordpress they don't see anything related to wordpress.

I can see when logged in and I hover over my window tab it says the domain name - Wordpress and I don't want it to say wordpress.

How can I get this change? I looked everywhere online and Ultimate Branding does not provide a feature for it!

I'm attaching a screenshot. Notice how I hover over the Browser Window Tab and that text comes out when hovering.