Modyfying the WooCommerce Thank You Page Texts

functions.php

<?php

add_filter( 'the_title', 'woo_personalize_order_received_title', 10, 2 );
function woo_personalize_order_received_title( $title, $id ) {
    if ( is_order_received_page() && get_the_ID() === $id ) {
	    global $wp;

        // Get the order. Line 9 to 17 are present in order_received() in includes/shortcodes/class-wc-shortcode-checkout.php file
        $order_id  = apply_filters( 'woocommerce_thankyou_order_id', absint( $wp->query_vars['order-received'] ) );
        $order_key = apply_filters( 'woocommerce_thankyou_order_key', empty( $_GET['key'] ) ? '' : wc_clean( $_GET['key'] ) );

        if ( $order_id > 0 ) {
            $order = wc_get_order( $order_id );
            if ( $order->get_order_key() != $order_key ) {
                $order = false;
            }
        }

        if ( isset ( $order ) ) {
            $title = sprintf( "You are awesome, %s!", esc_html( $order->billing_first_name ) );
        }
    }
    return $title;
}

add_filter('woocommerce_thankyou_order_received_text', 'yanco_woocommerce_thankyou_order_received_text', 10, 2 );
function yanco_woocommerce_thankyou_order_received_text( $thank_you_text, $order ) {

    if ( isset ( $order ) ) {
        $first_name = $order->get_billing_first_name();
        $site_name = get_bloginfo( 'name' );
        $my_account = '<a href="' . get_permalink( get_option('woocommerce_myaccount_page_id') ) . '">Min konto</a>';

        //$thank_you_text = get_field( 'acf_option_thankyou_page_content', 'option' );
        //$thank_you_text = str_replace( '{fornavn}', $first_name, $thank_you_text );
        //$thank_you_text = str_replace( '{sitename}', $site_name, $thank_you_text );
        //$thank_you_text = str_replace( '{myaccount}', $my_account, $thank_you_text );

        $thank_you_text .= '</p>';

        $thank_you_text .= '<h2>Ordreinformationer</h2>';
        
    }

    return $thank_you_text;
}