New iphone - cannot add comcast email to Outlook ios app

​I use the Outlook ios app for my email on my iphone. On my old iphone 6 with Consumer Cellular I connected with my Comcast email in the Outlook ios app with no issues. I received an iphone 6 with Xfinity mobile as my new carrier, and I can add all my emails from a variety of accounts (icloud, gmail, microsoft 365) but cannot add my primary comcast.net email account. I get the error "Unable to log in - invalid IMAP username and/or password."​

​I do have trust third party apps checks in the accounts. I've also tried deleting the old devices from Settings > Outlook settings > General > Mobile devices. I checked all the port settings against the ​​https://www.xfinity.com/support/articles/email-client-programs-with-xfinity-email​​ page. I've also seen the ​​https://www.xfinity.com/support/articles/configure-outlook-2013-email​​ which is only for outlook 2013 on a desktop. I've also seen the page on how to setup Xfinity Email on your iphone, but it's all about Apple Mail, not the Outlook app.​

​I can setup the email in the native Apple mail account, but I prefer the Outlook app. I can also send and receive email on my laptop, and can log into xfinity.com and see the email for my account online. It's only trying to add the email account in Outlook in the mobile app that I get the error message. I deleted the account under Mail in case this was a conflict for some reason, and restarted my phone.​

I'm not sure what else to try.