Issue on Gravity Form submit

  • Hello,

    We’re having an issue with the integration of the plugin with gravity form.

    Submitting the form while using either Production or Sandbox API keeps giving us 403 error in the console.
    We already tried disabling all other plugins and used untouched TwentyTwenty theme.
    Still gets the same 403 error using the test credentials from here
    https://developer.heartlandpaymentsystems.com/Certification/Testing

    Thanks in advance

    The page I need help with: [log in to see the link]

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