Can you please help this non geek. I was getting pop ups on facebook so I deleted some cookies - please don't ask what - I didn't really know at the time and it was a month ago but they seemed appropriate. Since then (I'm guessing that was the reason) I haven't been able to sign in to anything on Chrome on my Moto G 3. I'll enter my user name and password and it will just take me back to the blank sign in page for everything.
Any ideas what I did and what I can do?