HTTP and DNS Verification did not work

Hi, I am trying to get a free SSL for my website. I use HostGator, which should have come with a free SSL but I had problems. Then I went into WordPress and installed Really Simple SSL and WP Encryption. I went through the steps, and now I have to verify the HTTP or DNS to get my free SSL. I did everything correct, double-checked to make sure, and I still get this error message on both:

Could not verify HTTP challenges. Please check whether HTTP challenge files uploaded to acme-challenge folder is publicly accessible. Some hosts purposefully block BOT access to acme-challenge folder, please try DNS based verification.

and

Could not verify DNS records. Please check whether you have added above DNS records perfectly or try again after 5 minutes if you added DNS records just now.

Please help.

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