Help to change URL to the XML Sitemap

Hi.

When we installed the plugin the site url was i ip-number, and it seemes that the site map was created on that adress. Now when the site is at the right url the sitemap url is still the same. So when i click at the URL to the XML Sitemap only a error message shows.

I cant find were to change the URL to the XML Sitemap. Can you please help me with that?

//Carl