Can't use H5P 403 Error

Hi,

1- Detailed steps to reproduce the bug (exactly how and when did it happen)

Bug1: Each time I try to install an H5P action via H5P HUB, I have a 403 error (all actions) See screen shot.
Bug2: Each time I try to import manually a H5P file from H5P website, I have this error See screen shot:

Validating h5p package failed.

Missing main library H5P.XXX

 

I also tried via the "Library menu": I have no error here but the action was not installed.
So no possible workaround. :(((

2- Platform and version number. E.g. Drupal, Wordpress, Moodle.

Wordpress 6.8.2

3- Mobile or Desktop

Desktop

4- Browser: Chrome, Firefox, Safari etc

Chrome

5- H5P plugin version

1.16.0

6- H5P content type and version (if a content type was used), and a sample URL or attached H5P.

All

7- Any browser console errors

See screenshot 403 Error on admin-ajax.php

8- Any PHP errors

NO ERROR

9- Screenshots if it's a visual problem

See screenshot

10- Any recent changes to the environment (new plugins/modules, updates, configuration changes etc.)

New install

11- Any recent changes to the browser you're using (new extensions, updates etc.)

No.

What I tried:

- Disabled all plugins : 403 error (included Wordfence with a comple uninstall)

- Disabled Hosting provider Application Firewall : same error : 403 error. My hosting provider told me that he saw NO 403 error in his log !

- Renamed .htaccess (backhtaccess) : same error : 403 error

- Checked access right on /wp-content/uploads/h5p and /wp-content/uploads/h5p/temp. : 755. I tried 777 : no change : same error 403 error

QUESTION: Why is it sooooo complicated to user your H5P solution ????

Could you help me please ?

Content types: