I’ve been waiting 5 days now to get my Universal Certificate processed. Also tried to disable Universal SSL and re-enable it again. Unfortunately, it doesn’t get past the validation process.
Didn’t make any changes to the A and AAAA host records created when I moved my domain to Cloudflare. Just added a few hostnames and the www record to see if that made a difference.
Before you do anything with Cloudflare, you need to fix your server, as there is not SSL certificate either. As long as that does not work it cannot work on Cloudflare either.