Ok now i know its a Chrome thing, i tested on the Edge browser and the notification it worked normally.
But chrome still doesnt work, even after the flags reset :(
Go into your JSP settings for push notification don't hit disable use the red X in the upper right corner then use the "enable" button to reenable.

Also verify in Chrome that sites can ask to display notifications.
chrome://settings/content/notifications
Can try to clear browser data as well.
chrome://settings/clearBrowserData
If none of the above work you can delete all windows notification settings with a cmd prompt via the registry editor - I normally would not suggest taking reg edit codes from folks though but if you'd like to try it I'll provide the code and screenshot showing it being used on my pc.
Hit windows > cmd (run as admin) enter the following
REG DELETE HKCU\Software\Microsoft\Windows\CurrentVersion\Notifications\Settings /F

Restart pc after doing this. It will clear all Windows notification settings.