That’s an easy one to answer: YOU.
Yes, you have ALLOWED particular websites to show you offers and notifications.
At some point when you first looked at a particular website, you clicked on the ALLOW option (see picture) which told the website or advertiser you were happy to receive these pop-ups.
This is not related to Cookies, which is something different, which will appear in a different location, and you do want to ALLOW Cookies. Yes, I know, it’s very confusing.
And there you have it! It’s all CONFUSING. This is what the marketeers are utilising now, that uncertainty we all have about what is good and what is bad.
Suffice to say, if you see a box like the one in the picture, click on BLOCK. Just BLOCK.