Trouble logging in. Help?

For some reason, I can't sign onto Fanpop on my home computer. I've always just been "remembered" and taken to my account whenever I came on, but lately it's been making me sign in, which was fine, until it stopped working. Whenever I hit "sign in" the picture beside the sign-in box (you know, that "what are you a fan of" one?) just appears in the box and that's as far as I get.
The werid thing is, it only happen on my hone computer, everywhere else is fine!

Is anyone else having this problem? Does anyone know what I'm doing wrong or how to fix it?

Thanks!