COMCAST E-MAIL no longer works on my i-phone 8

3/30/20

I can no longer "open" my COMCAST e-mail APP on this i-phone.    It says the "mail server "imap.comcast.net is not responding.  I keep trying to re-enter the password.  Nothing works.  This same COMCAST.net e-mail IS working on my Chromebook computer and I would think that the Password for the computer and Password for i-phone would be the same.  What is wrong???