I am having an awfully painful time trying to use Fixer

I am having an awfully painful time trying to use Fixer to create a simple front page. I had some questions before which where answered. But not I cannot see how to simply centre text in an element. I have tried and searched, but it is neither Intuitive as promised or practical to raise a support ticket at every step. I am simply trying now to centre a text element on a page now and since I been been trying this toady for about 1/2 hour and about the same on previous days, I cannot see how this theme will increase my production. I am not sure whether to request a cancellation an refund, but WPMU Dev seems to have lot to offer. Can someone tell me how I can position a sub title or tag line text element on the page currently showing at http://new-web-sites.com