KAROLINA - Background Problems

hey there,

please take a look at my page: http://schoenwalds-hannover.de/

what the hell is wrong with the background? I cant fix it. Do you see the suares?

And how can i delete the right upper menu? And what is the left upper part - there stand "Keine Kategorien" - I want delete this.

I have purchase the theme. So thank you so much.

Decilla

Ok - no mather: pls ignore the question over there: just one thing: when i use the Logo as an PNG the quality is sooo bad. Please take a look, what can i do?