Typically this error will manifest due to conflicts in the host site. There are few issues attributing to this error which we have included below along with the corrective action:
2. Embedded sites with full HTML Form-embeds were experiencing issues with the code complying with the embed site. This issue has since been resolved as of 2/25, however, you will need to re-embed the form in your host site to pick up those updates.
Once these actions have been performed, you should be able to re-enable the reCAPTCHA options using your site domain and submit the form without error. If you continue to experience errors or issues along the way, please contact our Support Team for additional troubleshooting.