Bugs in content types

I cant seem to open the h5p file i saved. It says h5p cannot open.

Hello, I have set up a new Wordpress site. Latest version. 6.1.1. Nothing is installed yet. I just installed H5P, LearnPress and Elementor. I am using a free theme. astra

I enter the creation page to add a new H5P content. I'm doing the H5P content. (For example Question Set, Course Pre. or Drag Drop i try many of them...) Then when I press the "Create" button on the right side of Wordpress, the page reloads and the content disappears. A new content is not saved.

What can I do, do you know?

My PHP 7.4

Thanks

When I go to create a new interactive book, it won't give me the option to add new content. Also, I've noticed that content I've used before in the interactive book (essay tool for example) is no longer available to add into existing books I've created.