Problem logging into Scottrade [Turn auto-submit off]

I recently changed my password in my and my granddaughter's scottrade accounts. Prior to changing the password login went according to expectations. Since I changed my password, 1Password will fill the account field and then the password field. Immediately the password will go away and a message saying the password is not valid. This is confusing as I then enter the same password and it is accepted. I have tried this on both Chrome and Safari and the results are the same. I even deleted the old 1Password logins and created new ones. The results are the same. Right now it seems peculiar to that site. Any suggestions or ideas?

This is the login page.. https://trading.scottrade.com/Default.aspx?act=logoff