Dear Rashida,
Thank you for your reply.
Unfortunately, I don't have anything to describe because I simply cannot use it. My session stops at the request for login credentials for the frontend editor. Once the fields are filled in, the login page is loaded and it is not possible to proceed further because the page returns to itself.
What is infuriating is that it was previously possible to edit pages with a decent editor even from within the administration session without having to log out and log in again. Now, instead, you can make small changes but you cannot easily create a new page. I wonder why a system that worked so well was changed to replace it with one that simply does not work, especially since the frontend editor has never worked well.
The mere fact that you have to perform a series of steps before you can use it suggests a poor system, such as disabling the cache, disabling css and javascript compression, disabling SEF URLs, etc.
I understand that it may depend on how the server is configured, but this configuration does not depend on me, so I think that a software for which a fee is paid should work regardless.