Internal server error 500 after disabling Cloudflare to troubleshoot SSL configuration

ssl

#1

I created a free Cloudflare account early last week to try to set up Cloudflare/SSL on my Drupal website (www.ielr.com). I configured everything, and it seemed to be working fine on the Cloudflare end, but my website was still not displaying the green padlock. I contacted GoDaddy, our web host, and they told me to switch the nameservers back to point towards GoDaddy so they could replicate the problem. I did so, and waited for the nameservers to propagate. Now, however, my website is down – it displays a generic 500 internal server error. This problem only started occurring after the nameserver change.

Could anyone help me figure this out? I am not a web developer, and am at a complete loss!