What’s wrong with this tag ?

Why are you running the img tag through the translation function? Try this instead:

<?php wp_list_pages("title_li=<h3><img src='https://nando.myacen.com/wp/wp-content/themes/fjords07-10/menu.jpg' /></h3>"); ?>

Still not showing. Any idea why? take a look: https://nando.myacen.com/wp

Try replacing the double quotes [“] with single [‘] and vice-versa.

double quotes doesn’t work, it gives an error message. Single quotes is what is currently being used and no image appears. So weird…

<?php wp_list_pages('title_li=<h3><img src="https://nando.myacen.com/wp/wp-content/themes/fjords07-10/menu.jpg" /></h3>'); ?>
You mean this one gives you an error? The keyword was the vice-versa ??

Still no image showing…. Damn it!

There should be another way to show th image, isn’t there?