Reinstall H5P plugin without losing the content

I've recently got a lot of problems after updating the h5p plugin and their libraries. I am using H5P 1.15.3 running on Wordpress 5.7.2

One of them is: the Course Presentation Editor doesn't work at all.  I am getting this code [field:group:coursepresentation:presentation] instead of editable presentation. The browser console  (Chrome, Firefox) shows me a bunch of error messages like " Uncaught TypeError: Cannot read property 'prototype' of undefined..."

I would try to reinstall the plugin. how can I prevent losing the created content? 

thanks in advace


Content types: 
boton's picture

I have the sam issue but I'm using Moodle 3.11.2

Older courses containing Course presentation cannot be edited at all

Course backups freeze with any h5p content. 

Beto Boton