Thank you all for the responses. I must make myself more clear on this. I can have the admin data of my client's facebook page but when I try to "Add the Facebook page you want to track for this campaign." (under the button "social") then SEOMoz says she wants to have rights of my own facebookpages because I am the owner of this SEOMoz license. When I answer "skip" then SEOMOz tells me that she can't keep track of those pages.
patrick