Remove Residual Styling (Fix Mobile Menu)
Copy the template-parts/navigation/navigation-primary.php file from the parent theme to your Child Theme*.
Replace the contends of the file with the following:
* Primary Menu Template
* @package Signify Pro
<?php wp_nav_menu( array( 'theme_location' => 'menu-1' ) ); ?>
* Please note, there are many variations of the Signify theme, all released as child themes, you may already have a child theme installed (e.g. Signify Dark). You will need to reapply this edit to your child theme if it gets updated.