I am using Pro Sites plugin.When I click on Upgrade Now button it shows page not found?

Hi there, I am using pro sites plugin in my multisite http://www.visionorigin.com. I have installed it and set the settings. But when i clicked on upgrade now or my account button, it redirects me to "page not found". and when in settings page i have seen a link "Edit Checkout Page", then it says, the page is moved to trash so make it publish first. I have publish the Checkout page from trash but still the error is coming. Can anybody please help me out of it? Thanks