Orage error message on forms with reCaptcha

Hi, I’m having some problems with the reCaptcha implementation. Here is what is happening:

I have the same site in 3 different environments: development (in a VM), homolog and production (each in their own servers).

I installed and configured Contact Form 7 in all 3 and configured them the same way (using the appropriate emails and reCaptcha keys for each).

In my development environment everything works perfectly with or without using the [recaptcha].

In both homolog and production I get the orange error when I try sending e-mails using reCaptcha. If I take the [recaptcha] out of the form, it sends the emails without any problems.

Just to give some more info on what I have already tried:

• I deactivated all plugins and changed the theme o a default wordpress theme with no change.
• Tried the snipet in this response.
• Instaled the plugin mentioned in this response and got the following error: “An error occured when verifying the reCaptcha. The form can not be submitted at this time. The errors reported were:http_request_failed: No working transports found
  These errors may occur on servers which don’t support SSL with cURL.”

I use cURL in other parts of my theme so I know both servers have support for it. As I haven’t seen an specification indicating a need for SSL anywhere on the documentation, I’m not sure this is really what is causing this.

If anyone can point in the right direction to solve this I would really appreciate, because I don’t really know what could be causing this anymore.