H5P

What can we do? We just upgraded to 3.9 and now whenever we're trying to create a h5p activity, chose the h5p activity content type, fill the forms, press save, the page just refreshes like I am creating a new h5p activity again.
Only after these I started reading about it and realised that Moodle is developing their own h5p which is great btw.

I am wondering how do we fix this? what are our steps?

thanks