Wp_nav_menu(); ignores custom menu, displays posts

Do you have a front-page.php in your theme?

Or open every php file and search for the unwanted wp_list_pages(); function…

I have neither front-page.php nor wp_list_pages();

Looking at the Codex for wp_nav_menu(); (https://codex.www.ads-software.com/Function_Reference/wp_nav_menu) I something about it falling back to wp_page_menu(); but I don’t understand how this works and how I messed it up with my changes to index.php.

Hmm… can you show us your header.php and index.php (with https://www.pastebin.com)?

Header:
https://pastebin.com/YiXPnBPG

Index:
https://pastebin.com/xvVVhdZy

The problem you have is that you didn’t register the second menu. Go in to your functions.php file and look for something like the below. You’ll see that I have two menu’s there, which makes the whole thing work.

add_theme_support( 'nav-menus' );
	add_action( 'init', 'register_my_menus' );
	function register_my_menus() {
	register_nav_menus(
	array(
	'menu-1' => __( 'Navigation Menu' ),
	'menu-2' => __( 'Meta navigation Menu' )
		)

I actually used this code I found on the forums in my functions.php file and it works perfectly:

add_filter('pre_get_posts', 'query_post_type');
	function query_post_type($query) {
			if(is_category() || is_tag() ) {
    				$post_type = get_query_var('post_type');
						if($post_type)
	    						$post_type = $post_type;
						else
	    						$post_type = array( 'post', 'video', 'image', 'audio' ,'nav_menu_item');
    					$query->set('post_type',$post_type);
						return $query;
    			}
		}