Social links and logo problems

Hi there, when I access my page from a mobile device it displays the Highend Blog logo rather than my own logo (which is shown when accessing my page from a computer).
I’m also having problems with my social like – when I am in the Highend Options menu and enter the links for my twitter and facebook it will not save, I keep getting an error that says “unverified access”. As a result, if I click on the twitter or Facebook icons on my page, it just defaults to the homepage.