H5P content embeded on labels not displaying

Hi everyone, 

We have been working with H5P for a good few months and we are now experiencing something that for us is a big issue. 

We use H5P in Moodle and we are creating the content in a column, using the stealth mode in Moodle and embeding the content into a label to display directly in the course page. 

When we are creating the content everything looks good, all content is displayed but for our students that is not the case. A lot of our students are reporting that there is no content to see when they log in to the course. 

We know that there is problem, that the content should be displayed but we can't pin it on something. It's a very intermitent problem and we already discarded the internet connection problem as this isn't the problem.

Has anyone experienced an issue like this? Some clues would be very much appreciated. 

Many thanks