If a page is not displaying correctly, and refreshing the page does not help, sometimes a hard refresh or a Shift-Refresh -- holding down the shift key and refreshing the page -- can work. In most browsers that bypasses the browser cache and loads all the page elements directly from the site.

If the problem recurs and you decide to clear your browser cache, try clearing your cache "for all time" if that is an option, otherwise the default may just clear some recent files and leave older ones intact. 

If it becomes necessary to clear cookies, try manually clearing just your eBay cookies; generally it is not necessary to erase all your cookies, as that would require you to sign back in to all your other individual sites once again.