Duo with PaloAlto Global Protect

Dears,
Good day to you.
We working to setup Duo as MFA with Duo. we have configured Authentication Proxy Manager and the result is

[info] SUMMARY
[info] No issues detected

Checking updates for Duo Authentication Proxy…
[info] No updates detected. Your Duo Authentication Proxy is up to date.

Now the proxy is working fine. we have changed the Global Protect Configuration as below video

We have followed the instruction as per the video, but unfortunately, it did not work.

my question,

How to set up the notifications to be pushed on the mobile?

Global protect ask for the user name and password and did not accept them after the changes.

any help?

Global protect