<https://wpmanageninja.com/docs/wppayform/form-configuration-wppayform/recurring-payment/#webpage>
<http://schema.org/primaryImageOfPage>
<https://wpmanageninja.com/docs/wppayform/form-configuration-wppayform/recurring-payment/#primaryimage>
<https://wpmanageninja.com/docs/wppayform/form-configuration-wppayform/recurring-payment/>