Changing “thank you” page

Hello! I would like to ask whether you can help me where can i find some setting where can i change part of thank you page which is between of heading “Na?e bankovní spojení” and “Vá? variabilní symbol: 15888” (IBANS). Heading “Vá? variabilní …” is generated by script in fuctions.php of template. There are only two function on hook woocommerce_thank you which are editing this page:

//VAR SYMBOL NA KONIEC
add_action( ‘woocommerce_thankyou’, ‘var_symb_thankyou’, 4 );

function var_symb_thankyou( $order ){
echo “<h1>Vá? variabilní symbol: <b style=’color:#00b6d6′>”. $order . “</b></h1><p>P?i platbě prosím nezapomeňte zadat variabilní symbol – bez něj nejsme schopni spárovat platbu s Va?í objednávkou.</p>”;
}

//THANK YOU PAGE PRIDANIE KODU
add_action( ‘woocommerce_thankyou’, ‘thankyou_page_sklik’ );
function thankyou_page_sklik(){
echo ‘<!– Mě?icí kód Sklik.cz –>
<script type=”text/javascript”>
var seznam_cId = 1111111;
var seznam_value = null;
</script>
<script type=”text/javascript” src=”https://www.seznam.cz/rs/static/rc.js” async></script>’;
}

I had not developed this page, and I cant find some setting or php script where can I change it. Can you please help me?

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