I follow all the instructions from the How to Use Cloudflare For SSL tutorial,
but after a day, I still get this error… help! 
Wait for the certificate to issue, you can see that in cloudflare>crypto
How long does it take?
Up to 48 hours. You have to wait 
Hi @domdee7!
Your domain is now loading fine with HTTPS. Please clear your browser cache and try again.
Also, to change your Wordpress default website address please go to Wordpress cPanel > Settings > General > and change all URLs to https://3db7.xyz