Cannot get in to my site to edit it . When I login it asks if I want to keep a "local copy" of a file or download the published copy.

Cannot get in to my site to edit it - and need add a new page to it right away. When I login it asks me if I want to keep my current local copy of a file or download the published copy. I really need to add a new page (home tour of a paying customer). The website is www.FSBOTupelo.com - please help!