Www.sub.domain.com uses an unsupported protocol

Website, Application, Performance Security
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The client and server don’t support a common SSL protocol version or cipher suite.

I’v setup my domain and i use the certbot from my linode to generate SSL certificates. Some images load and some dont: https://blog.andresanz.com/microsoft-project/tracking-performance-in-microsoft-project/

Thanks very much for taking a look

2

Correct. The regular SSL certificates only cover example.com and sub.example.com. To go deeper, you’d need a Dedicated Certificate with Custom Hostnames for that domain.
https://support.cloudflare.com/hc/en-us/articles/228009108-Dedicated-SSL-Certificates

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