MSN EXPLORER

I CURRENTLY USE THE MSN EXPLORER (SPANISH VERSION, THOUGH I THINK THIS DOESN?T MATTER)AND FIND I CANNOT ENTER MY E-MAIL ADDRESS IN ANY OF THE THE BOXES WHEN ON INTERNET. EVERY TIME I TRY AND WRITE MY E-MAIL USING THE “@” IT TURNS ME BACK THE THE PREVIOUS PAGE.
WHY DOES THIS HAPPEN?