Mary I had this problem. I spent ages trying to get into paypal. But it just kept saying my address or password was wrong. I don't know if it helps, but when Tan said to use the refresh button, I actually closed right down, and then re booted up and started again. And it worked. But it might just have been a fluke and nothing to do with completely re booting. I am sure Tan will get it sorted for you.
Julie.