Finally Solved it! If you are going to use this code make sure to change the options names to the ones that your theme uses (change “theme_mods_kadence-child” and “kadence_global_palette”).
I used get_option to get the recently saved data, then I looped through all sites and used update_option to set the new data on all subsites. Finally I used the customize_save_after action so this function activates just after the new customizer data is saved.
add_action( "customize_save_after", "update_customizer_networkwide");
function update_customizer_networkwide () {
// Get current theme mods
$theme_mods_kadence = get_option("theme_mods_kadence-child");
$global_palette = get_option("kadence_global_palette");
// loop through all sites and set new theme mods
$sites = get_sites();
foreach ($sites as $site) {
switch_to_blog( $site->blog_id );
update_option("theme_mods_kadence-child", $theme_mods_kadence);
update_option("kadence_global_palette", $global_palette);
restore_current_blog();
}
}
Hope this helps some of you!