MemberPress: Auto Expand Coupon Field

function auto_click_have_coupon_link() {

  ?>

    <script type="text/javascript">

      ( function( $ ) {

        $( document ).ready(function() {

          $('.mepr-signup-form .have-coupon-link' ).trigger( 'click' );

        });

      })( jQuery );

    </script>

  <?php

}

add_action( 'wp_footer', 'auto_click_have_coupon_link' );