I am not able to receive notification email when someone file a new issue

Someone file a new issue here, https://github.com/ChuckTest/PythonTest/issues/6
The problem is I did not receive the email notification.

How can I get the notification when someone file a new issue in my repository?
I supposed it should be a default setting.
By the way, the repository is under a organization created by me, not under my account directly.

I have the same problems with multiple repo’s that directly belong to me. People post issues but I don’t get emails or notifications on the home page. This is the most important notification type for me, but I never receive them so issues get left for weeks before I respond… Does anyone know how to make this work?