WordPress Simple Membership Troubleshooting

I have no idea what all this stuff means or what I may have screwed up in execution but I am certainly not comfortable with seeing this reference to an adServe in the result. The most concerning part is the URL it sends me to appears to be some type of adserver... When I put this into my menu and click it I get the following message on a page. I am trying to use the directions to create a. simple logout link. from this page. https simple-membership-plugin. comcreating-member-logout-link. HTTP Status 403 type Status report. message. description Access to the specified resource has been forbidden..  Read more