Approving User Account After Completed PayPal Payment

/**

 * Approve user after PayPal payment status is Complete

 *

 * @link https://wpforms.com/developers/how-to-approve-a-user-after-a-paypal-payment/

 */

function wpf_dev_activate_user_after_paypal_complete( $fields, $form_data, $payment_id, $data ){

    // Add the field ID for the user's account email

    $email_field = 3;

    // Stop editing

    $user = get_user_by( 'email', $form_data[ $email_field ][ 'value' ] );

    delete_user_meta( $user->ID, 'wpforms-activate' );

    delete_user_meta( $user->ID, 'wpforms-pending' );

    delete_user_meta( $user->ID, 'wpforms-confirmation' );

    // Check if we need to assign new role.

    $role = get_user_meta( $user->ID, 'wpforms-role', true );

    if ( $role ) {

        wp_update_user(

            [

                'ID'   => $user->ID,

                'role' => $role,

            ]

        );

        delete_user_meta( $user->ID, 'wpforms-role' );

    }

    wpforms_user_registration()->get( 'email_notifications' )->after_activation( $user->ID );

}

add_action( 'wpforms_paypal_standard_process_complete', 'wpf_activate_user_after_paypal_complete', 10, 4 );