amp pages are not found

Hi.
Our hosting provider provides a report of 404 errors as well as blocking the IP that tries to access ‘amp’ pages like this:

okobserver.org/your-presidency-might-not-be-going-too-well-if/amp/

How does this happen? When you take the ‘/amp’ away from the URL, it is found and is good. How to I make the ‘amp’ pages work and what causes them to be accessed?

Thanks.
Bob

The host 52.230.152.76 has been locked out of https://okobserver.org due to more than 5 404 requests for the file /your-presidency-might-not-be-going-too-well-if/amp/. Accordingly, the host has been permanently banned.

Did you install the AMP plugin?
https://wordpress.org/plugins/amp/