Microsoft Outlook extension

Microsoft Outlook extension - considering it has almost a million users, it deserves a separate topic.
I could not get Mail app to work, for the past 10 years, so I am inclined to use the extension instead.

My question would be, is it possible to enable notifications? I have some strict settings, so maybe it is just me?
Checker Plus for Gmail's notifications work just fine, it would be nice to have them in Outlook as well, if possible.

EDIT: I have managed to get 1-2 notifications, but that is the end of it, I enabled them and then they disabled themselves.

Apparently this extension can show only 1 notification, afterwards I have to clear notifications to get another one. Very straightforward.

EDIT: At last, success. All I had to do was to disable showing notifications for Edge in the notification center, omg.