Cannot Log into Xfinity App with Galaxy A16 using Andtoid Version 16. get Permission denied message

I have installed the Xfinity App on my Samsung Galaxy A15 phone. When I try to login I get an access denied message. I have cleared the APPs cache and also restarted my phone. Also uninstalled the APP and reinstalled. If I go to a separate web browser on my phone and go to Xfinity login I am able to successfully log into my account.

I need to be able to use the Xfinity APP because I want to get access to the Admin Tools to make adjustments to my Gateway Router which apparently I can only do through the Admin Tools.