I want to setup second level domain name e.g.
load.staging.mydomain.com on Heroku & Cloudflare.
http://load.staging.mydomain.com (without TLS) works but
https://load.staging.mydomain.com does not.
I already setup DNS entries, I created origin certificate on Cloudflare:
mydomain.com (3 hosts)
.. and I uploaded created certificate to Heroku ..
I am getting error when visiting TLS version of the URL:
ERR_SSL_VERSION_OR_CIPHER_MISMATCH Unsupported protocol The client and server don't support a common SSL protocol version or cipher suite.
However: first level subdomains work. e.g. http://staging.mydomain.com