Apparently SearchWP/Relevanss and Elementor doesn't play well together with Elementor, Searches and post grid. This is the outline of handling searching in post_meta.

functions.php

<?php

// Modify the fields to search in
add_action( 'elementor/query/searched_query', function( $query ) {
		$s = get_search_query();
		
	    if ( is_search() ) {
			$query->set( 'post_type', 'leverandor' );

			if( strlen($s) >= 3 ) {
				// only search ACF fields if more then 3 characters
				$query->set( 'meta_query', array(
					'relation' => 'OR',
					array(
					  'key' => '_post_title_for_search',
					  'value' => $s,
					  'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_short_description',
						'value' => $s,
						'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_description',
						'value' => $s,
						'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_address_street',
						'value' => $s,
						'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_address_street_2',
						'value' => $s,
						'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_address_city',
						'value' => $s,
						'compare' => 'LIKE'
					),
					array(
						'key' => 'acf_leverandor_contact_email',
						'value' => $s,
						'compare' => 'LIKE'
					),
				));
			} else {
				// If less than 3 characters, then only search titles
				$query->set( 'meta_query', array(
						'relation' => 'OR',
						array(
						'key' => '_post_title_for_search',
						'value' => $s,
						'compare' => 'LIKE'
						),
					)
				);
			}
		}
} );

// Every time a post is saved, update the posts title in a post_meta field so it's searchable
// using Meta Queries. It's not the most optimal solution, but it gets around Elementor + SearchWP/Relevanssi not
// playing well with Searches for 's' along with Meta Queries
add_action( 'save_post', 'yanco_save_post_add_hidden_title_postmeta', 10, 3 );
function yanco_save_post_add_hidden_title_postmeta( $post_id, $post, $update ) {
    if( $update === false ) {
        return;
    }

    if( $post->post_type !== 'leverandor' ) {
        return;
    }
        
    remove_action( 'save_post', 'yanco_save_post_add_hidden_title_postmeta', 10, 3 );

    // Check for acf_boligforening_subscription_number_new
	$post_status = get_post_status();
	
	if( $post_status == 'publish' ) {
		update_field( '_post_title_for_search', get_the_title( $post_id ), $post_id );
	}
	
    // re-hook this function
    add_action( 'save_post', 'yanco_save_post_add_hidden_title_postmeta', 10, 3 );
}