I am trying to list somthing on ebay

I have completed the listing but want to add piccs

I have clicked " select piccs " and the box has opened and i have selected the piccs from my documents i require then pressed upload , the screen changes but no piccs are coming up on the listing

I have tried this about 8 times , and every time i press upload the page refreshes buy no piccs are in the box ,,,

what am i doing wrong I have done this before and had no problems