Vantage Theme Help

Hello just downloaded the Vantage theme for website (yuliskincare.com) – I’m having trouble centering the logo in the header. A lot of the pages such as “about us” now ask people to leave comments, which we do not want but I can’t seem to find an option to turn this off anywhere. Finally (and most importantly) in our old theme a customer was able to choose their shipping country at checkout from a drop down menu and then that would give them a shipping fee so they could see their total. In this theme, the drop down menu is gone on the check out page so customers cannot choose their country, which means they get stuck on this screen as they do not have a shipping fee – please help! Thank you!