Common plugin settings allow you to specify Google reCAPTCHA v2 API keys. If these keys are provided, Google’s robot filter will be used. By default, and without specifying keys – use the built-in custom filter.
The robot automatically inserts the filter in front of the first
submit element of the form. (In an earlier version, the location of the filter had to be marked. This is now redundant.)
It may appear that the appearance of the form is different, the information that can be entered has been expanded. This will display the form if you use a customization pattern in the
customize-samples folder of the plugin.