Same issue here @ redmars

I just updated the Step 1 code, please update it in your theme's functions.php file.

Thanks  Robert all sorted 🙂

 i cant get it to work 🙁

<?php echo wpforo_kses($post['body'], 'post') ?>

is not existing in my post.php 

You can make the iframe responsive... something like that, with css 😛

.wpforo-post-content iframe,
.wpforo-post-content object,
.wpforo-post-content embed {
position: relative;
top: 0;
left: 0;
width: 100%;
max-width: 600px;
height: 320px;
}

Cheers!