Everytime I log into eBay I now have 2 banner messages appear at the top of the screen, eBay treied and failed, any way of stopping them popping up?

What started last year was the appearance of a message on the eBay page that cookies operate on this site in a banner accross the top of my web page, I now have a second message which is informing me that PayPal is about to split from eBay at this rate as I am unable to remove the banners I will have nothing but banners on my eBay page. eBay have been trying to solve the situation but so far been unsuccesful, they suggest I use Chrome as they have no problem on that system. I like using Mozilla Firefox. ANYONE OUT THERE know how to stop these stupid banner messages appearing at the top of my web page everytime I log into eBay. Options, Show Cookies, type in eBay, press Clear All. has made no difference.