Enable Legacy Email Templates

/**

 * Revert to legacy 'HTML' email template, v1.8.4 and below

 * 

 * @link   https://wpforms.com/developers/how-to-enable-legacy-email-template/

 * 

 * For support, please visit: https://www.facebook.com/groups/wpformsvip

 */

$settings = (array) get_option( 'wpforms_settings', [] );

$settings[ 'email-template' ] = 'default';

update_option( 'wpforms_settings', $settings );