Open both the main domain and www version over HTTP and HTTPS. The public entry points should converge on the intended HTTPS domain without a long redirect chain.
Check the certificate’s hostname and expiry, then inspect mixed content. Old image, font or script URLs using HTTP can cause warnings or blocked resources on an otherwise secure page.
Repeat the checks after DNS or hosting changes. A valid certificate does not fix a wrong canonical, broken form URL or missing redirect.
Vladimir Nikolaev
Development and SEO at WebSoftLeader. Clear explanations and a practical first step for your project.
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