Just to clarify, it is not TB that is not accepting your password, it is Xfinity. TB is only the messenger. Many providers require a unique password for email clients, so you might check with Xfinity on this.

Thank you for those details. I know I need to use the Xfinity password to sign in to TB, and have changed the Xfin password to make sure I was entering the most current Password but TB still fails to accept it. It is the only password I use with Xfin and the accounts are using the same name, but still no luck. I have used TB for a very long time and I am comfortable using it. I have had this problem in the past and sometimes, if I tried the same password over and over, it was eventually accepted which seems strange, but I could see my email being downloaded letting me know I was logged in. But this time, it has not worked. Thanks again for your comments.

To assist, I did a web search and found this URL. I encourage you to pursue with xfinity. https://www.xfinity.com/support/articles/third-party-email-access