There are a few progs that will stop Int Explorer working, it's not a good programme to use actually, unless you have a very old PC, try Microsoft Edge, or Firefox they are much safer to use the IE, I find I have trouble on my IPad with IE, and I think it is Apple stopping Microsoft programmes from working, and if you use Google I find the same things happening, I simply think they (Apple, Google, Microsoft, et al) are at war I do know however that many sites do not like IE because it is not a safe browser.so easy to hack, and they are scared of losing their information. Do try an alternative and then see if you can connect to the sites you want, try Opera which I find quite good.
You may need to check that you have EBay as a trusted site in IE.