Email access ceased - cannot access email server

Hello -- I am not receiving any emails - even emails I sent from Outlook using my Xfinity account. I've changed my password and resigned onto the Xfinity account; I've rebooted my router and pc and nothing works. Ironically, the Xfinity site indicates there are no Internet issues in my area - which based on Internet usage is true. and everytime I go to chat to describe this issues I just receive a "you are not eligible to move to Yahoo email" message - help!!!!