Mr tivoli Blue

Hi New here and in trouble. This may not be the right place to post this but i cannot find an alternative.

British users. I have changed isp to the dreaded talk talk. using mozilla firefox browser. since changing to talk talk i cannot sign in to ebay. after entering user name and password screen goes blank and stays like it for ever. at the bottom is says waiting for ebay. i can log onto other secure sites like banking but not ebay. it's beginning to annoy me.