About the menu, looks like you have changed the header on the site, so I can’t see All departments menu now, however, the menu can be edited via Appearance > Menus. I’ve enabled the Elementor for static blocks – https://prnt.sc/tvl9az , so mega menus can be edited now – https://prnt.sc/tvl9pg
About warnings, please reupload this theme-functions.php file into xstore/framework folder via FTP – https://dropmefiles.com/RALcq
