Amazon's SSL certificate is expired for the domain that serves native ads for Amazon to Amazon Associates websites. The certificate expiration causes Amazon ads to be blocked from display on websites that are configured with https. Web browsers do not display results of code that is not configured with https, and does not display results of code that is configured properly without a valid SSL certificates
The certificate expired on Monday, January 10, 2022 at 5:59:59 PM Central Standard Time. Ads have been blocked from display from at least January 11, 2022 through January 14, 2022.
Amazon provided no alert to Amazon Associates regarding any effort to resolve the issue.
Amazon Associates use Amazon ads to provide income to fund website operations, or use Amazon ads to sell products as a major source of income.