I've been working on the same SSL issue for over 12 hours.
I could not get an external domain to get to SSL, so I bought a new domain -- marriageworks dot co.
Even though it's an AppDrag domain, SSL still won't work.
I'm assuming I need to use cloudfare.
I have gone through the instructions (https://support.appdrag.com/blog/82-Use-CloudFlare-and-activate-SSL-on-root-domain.html?category=6) multiple times over the past several hours with no positive results.
The directions say "Add a CNAME entry for host: @ with value: custom-domain.appdrag.com, proxied (orange cloud)"
I cannot add that value without getting this error message.

The next issue is the directions say to use my cloudfront address. Where do I get this from? There is no cloudfront address in the "Main Domain & SSL" in project settings.

What am I missing? I'm following the directions step by step, but cannot get SSL to work on my domain.

Help!
Thanks,
Kevin