Hello @fabriziopieroni
Thank you for the support topic, we tested your site’s AMP pages on the AMP test they seem to be valid and have no issues.
We also performed a rich results test (structured data) on AMP pages they also seem to be valid and have no issues.
please provide more details about your error, so we can further assist you.
my site health option says:
Unable to detect page caching due to possible loopback request problem. Please verify that the loopback request test is passing. Error: Service Unavailable (Code: http_503)
The AMP plugin performs at its best when page caching is enabled. This is because the additional optimizations performed require additional server processing time, and page caching ensures that responses are served quickly.
Page caching is detected by looking for an active page caching plugin as well as making three requests to the homepage and looking for one or more of the following HTTP client caching response headers: cache-control, expires, age, last-modified, etag, x-cache, x-proxy-cache, cf-cache-status, x-kinsta-cache, x-cache-enabled, x-cache-disabled, cf-apo-via, x-srcache-store-status, x-srcache-fetch-status, cf-edge-cache.
@fabriziopieroni
Thank you for providing more details.
Please contact your hosting provider regarding the loopback request issue, they can assist you better on this one.
Your site seem to be using 3 caching plugins (WP Rocket, WP-Optimize – Cache Clean Compress, and SiteGround Optimizer) which may be the reason AMP was not able to detect the caching on your site, but as I manually checked responses it seems your site responded with 304 meaning ie. serving cached pages.
We will recommend keeping one caching plugin per site.
you can learn more about page caching and persistent caching on our site.
@fabriziopieroni
As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you require any further assistance.
