Just for information, eBay will be blocking the use of the site on older versions of browsers as a security measure.

Some things, or all things, may not be working due to this.

http://www2.ebay.com/aw/au/201410.shtml#2014-10-18075510?_trksid=p3984.m2301.l3955

Recommended to update to the latest version of your browser choice.

Could be why everything else is working for you except eBay. Also worth clearing out your cookies and cache and rebooting, if you haven't already. Otherwise check for any updates to your browser.