Transition from Comcast to Yahoo Email

I use Xfinity Connect to receive my email. I have 3 Comcast email accounts. The landing page on Xfinity Connect shows the invitation to change to Yahoo email. I hit the link to "get started" and am prompted enter my Comcast email and password. However, this activity goes nowhere. Nothing comes up as a result of signing in. I cannot accept the Yahoo terms of service because nothing happens. Kindly advise.