hi there.
i have connected my website to cloudflare. unfortunately i got that error:
This site can’t provide a secure connection
pegahproto.ir uses an unsupported protocol.
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
how can i fix that? is a problem with ssl installed to my website from before.
i have a free auto renew let’s encrypt certificate.
by turning of website cloud error disappears.
so i did this so you can check my website and help me.
my website to check: pegahproto.ir
It does not look like Cloudflare have a certificate for your domain (check all known certs here: https://crt.sh/?q=pegahproto.ir), and I would expect that https://dash.cloudflare.com/?to=/:account/:zone/ssl-tls/edge-certificates does not show an active certificate. If you go 
visitors will get errors.
There are issues with the .ir domain getting certificates from any US based CA. If you have a Business plan or above you could try and add a custom certificate (just use the API to upload your LE cert), but somebody else here may have more definitive information.
This topic was automatically closed after 30 days. New replies are no longer allowed.