Concerning the module book from same author.
I put a link in the menu to the component booklibrary (catalogue des livres).
the module should appear in the upper left when you go into this
component. Following your recent changes it works.
Now, when the module displays the books from the same author and
Clicking on a cover or on the link below, it opens
page of the book but the module disappears and reappears only
if you return to the menu link.
I think the problem is the link used.
In the navigation bar, when you are in the booklibrary component you have
the alias ( /index.php/catalogue-des-livres?task=view&id=3389&catid=342 )
but after clicking in the module you have
instead of the alias
The administrator has disabled public write access.