Really Simple says it is set, but wordpress and https://securityheaders.com/ no

I have set the headers according to your documentation 3 times now. I keep getting told the headers are not set. Other than adding to the Preload list, everything is set to on, but when I go to SecurityHeaders.com I am told it is not, and the wordpress dashboard says I am missing Upgrade Insecure Requests, Frame Ancestors, X-XSS protection. but they are set to on on my screen.

SecurityHeaders.com has this:

Security Report Summary

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Site:https://www.mastermanaging.com/IP Address:194.1.147.15Report Time:24 Jun 2023 13:54:35 UTCHeaders:Strict-Transport-Security Content-Security-Policy X-Frame-Options X-Content-Type-Options Referrer-Policy Permissions-PolicyAdvanced:Ouch, you should work on your security posture immediately:

Missing Headers

Strict-Transport-SecurityHTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS. Recommended value “Strict-Transport-Security: max-age=31536000; includeSubDomains”.Content-Security-PolicyContent Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets.X-Frame-OptionsX-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. Recommended value “X-Frame-Options: SAMEORIGIN”.X-Content-Type-OptionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is “X-Content-Type-Options: nosniff”.Referrer-PolicyReferrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.

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