No detect Visits in my blog

I am new to Matomo, I am amazed with the strong experience of Matomo, I have 2 Wordpress linked to Matomo, a store where I get everything related to Woocomerce and then a blog where I do not know why Matomo does not detect the visits, is it because I would have to put the www as the domain is like this?

Have you tried the Wordpress plugin or is the Matomo coded added in the pages as it is (non-plugin)?

What do you mean? are these same website, separate subdomains?

I solved it, it is because I have the page in Amp, and I did not put the code of Matomo, in that box the code is different, Matomo is great!!!