Also it might be worth mentioning this in case your browser isn't up to date:
General Announcements
To make shopping even safer for you, eBay is restricting site access through older versions of web b...
We have decided to restrict the use of an outdated Internet security protocol, SSL 3.0, because we have determined it does not meet our standards. This industry-wide protocol, which is more than 18 years old, has been recently restricted by many Internet companies because it has a vulnerability.
Fortunately, the newest versions of browsers available provide higher levels of protection. The newest versions of Internet Explorer, Google Chrome, Firefox and Safari will continue to work without SSL 3.0. However, customers using older browsers (see below) without support for the newer, more secure protocol, will experience issues using eBay and need to update their browser.
Implementing this change is necessary to provide a safe, secure online shopping experience to our millions of customers, which is our top priority.
Although that announcement was issued in October 2014 I don't think it was implemented till just recently - however I could be wrong.