Membership Access Levels not displaying content that should be allowed

I have been using the Membership plugin without much trouble but I noticed that two of my upper-level membership options are not able to view content that the other levels can, but this is content that should be viewable by all. For example, the slider on some pages should display images that link to content and the images are added the the slider by their category. All membership access levels allow the category but two levels can't seem to view it. They are also not able to see the testimonials, which are added and displayed using another plugin (non-wpmu though) but I imagine the issue is related. Can someone help me figure it out?