I checked your course and the content in your unit .We recommend wrap the ifrmae code in the [iframevideo][/iframevideo] shortcode like this :
[iframevideo]<iframe src="https://player.vimeo.com/video/479090273" width="1000" height="570" frameborder="0" allowfullscreen="allowfullscreen"><span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span></iframe>[/iframevideo]
this is in V3 ,
In V4 we have different type of dedicated video unit type in which you add vimeo url directly and it renders the video in course status .
But however for the time being you can add this code in your wplms-customizer.php file in wplms customizer plugin :
add_filter('bp_course_api_get_user_single_quiz_data',function($data){
$data['content'] .= '<style>.course_content_content_wrapper .course_content_content{ padding:initial; height:auto; overflow: initial; } .course_content_content_wrapper .course_content_content iframe{ position:initial; }</style>';
if(!empty($data['meta'] ) && isset($data['meta']['completion_message']) ){
$data['meta']['completion_message'] .= '<style>.course_content_content_wrapper .course_content_content{ padding:initial; height:auto; overflow: initial; } .course_content_content_wrapper .course_content_content iframe{ position:initial; }</style>';
}
return $data;
});