Ssl error for my subdomains

Hi, I have a digital ocean droplet with certbot installed on all of my domain and subdomains, recently I have connected my site to cloudflare and now I can see that the www version of my subdomains is inaccessible. I get an error:

_________ uses an unsupported protocol.

ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Please help me

Kindly, see below topic in order to gather some more information about your SSL settings for your sub-domain:

Furthermore, this one seems to me it could be related to as described in below topic as far as it’s a “deep sub-domain” level www.sub.domain.com:

You might have to use Cloudflare Advanced Certificate Manager to solve this issue as far as Universal SSL certificate does not cover that deep level (as far as I remember, could be I am a bit wrong about it):

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