Desktop Notification -enable Google Chat

[uncle]

In Gmail, Chat settings/Manager, I see
“You are not getting notifications because desktop notifications are disabled in your browser. Enable notifications in your browser to get notifications from Google Chat.”
On Privacy tab, I have entered https://mail.google.com/chat/u/0/#chat/home & hit Save changes, but it is not listed when I go back in. Am I not putting in the correct website address?
Thank you.
(Interestingly, I do get these notifications on Pale Moon)

[HansV]

What happens if you enter just https://mail.google.com ?

[uncle]

Thank you Hans for that suggestion. I had tried it but it, too, didn't appear in the allowed sites. I unchecked Block new requests, saved, went back in. Still doesn't appear.

[HansV]

Sorry, no idea then.