iPhone 4s iOS 6.1.2 issue?

Hi, I'm working on a blog website in a local dev/wamp environment. I tested your Catch Box (free) theme on it and all looked well. Today, having  purchased and upgraded to your Catch Box Pro theme, I made some changes to the website and then viewed the dev site on my iPhone only to find that it now displays narrow, about 80% of the screen (whether portrait or landscape). I tested the Pro theme on my iPad and it displays full width. I changed the website back to your free theme and it displays the full width of the phone screen. I have just updated my iPhone 4s to iOS 6.1.2. I wondered if there was any issue with this release? Also, the menu option on the free theme defaults to the Home or last selected page, whereas on the Pro theme it shows the last menu option in the list. (And, I don't know if this will help, but if it's only when I select this that the screen takes up the full width.) I hope you can help me ... or should I post this as a support request? Regards, Robertf