Fundraisings URL not found

I’m trying to configure fundraising plugin, but in settings at the Presentation tab, I have an url in “Fundraising Directory Location” option, if I put this url at the navigator, wordpress say me that this page not exists.

On the other hand, if in settings at the Others tab i select “yes” on the “Add fundraising directory to menu?” option, when I go to the Appearence->Menu, don’t appear this page to the page’s menus

can you help me please?