Steps to configure free ssl on tomcat

Are these the instructions you were following?
https://support.cloudflare.com/hc/en-us/articles/216992638-How-to-install-an-Origin-CA-certificate-in-Tomcat

I don’t use Tomcat, but I’d try bypassing Cloudflare (grey cloud) to see what certificate is being used…if you’re not getting a 502 in the process.

As an aside, what SSL setting are you using here? Full? Full-Strict?