Incorrect Login

Originally posted by Nooge:

Try using a different browser

I tried doing that, but it won't let me sign in.

Whenever I try signing in to TF2 Outpost via Steam won't let me sign in! I tried filling out the "Are you human or robot" section with the letters and numbers above, but it won't let me sign in. I don't know what I'm doing wrong, but I need some help with this.