I am trying to get to the "clear cookies and Caches" which should be under Privacy & Security. When I go to preferences, i can move to Privacy & Security or the other headings, but I cannot scroll down any of the pages under the headings. When I am on the Privacy & Security page the scroll down arrow takes me to Sync heading etc. How do I fix this? I am having to go to the cookies to clean up as I am having another scroll down issue with an app that is important to me. In that I cannot scroll down a list as the dark side bar flicks on and off immediately. I am on a MacBook Air.