reCAPTCHA error: "ERROR for site owner: Invalid domain for site key"

This error and derivates are caused on your side configuration of reCAPTCHA.

Visit https://www.google.com/recaptcha/admin in order to fix this missconfiguration.

Please make sure you are correctly typing your full domain name. For example, if you are hosting the system at http://mycoolnetwork.com, make sure to set the domain to "mycoolnetwork.com". Another example is, if you're hosting it at http://apply.mycoolnetwork.org, make sure you set the domain to "apply.mycoolnetwork.org".

If the problem persists, make sure you correctly entered the site key and private key in the General Config inside the Admin Panel.

Again, if it persists, give it a hard refresh (CTRL + F5), or try again later.