>added the function from here …
that function does nothing when used with wppizza v3.x+ – that link you posted is almost 3 years old.
I have updated that particular post now though to make sure it’s obvious that this is old stuff.
Thanks for flagging it ….
(unless of course you are still using wppizza 2.x, but then you would not have an option to “enable notification” in the first place…, so I would make an educated guess you are on 3.x)
>I have enabled notifications on all admin pages,
can you post a screenshot of your settings ?