is anyone else having issues with the imap link on their outside emails?

As of yesterday, I can no longer receive my Comcast emails on my iPad. I can send but not receive. The configuration is correct but keep getting one of 2 messages:

Comcast is not available

my email is not available

I spoke to Comcast and they indicate no issues on their end. When I use their app, I get the emails just fine

HELP!