Hello Paul. Forgive me if I wasted your time. I forgot that categories had to be created in the admin panel and not within Page Builder! Thank you...

Nothing to sorry, indeed, I asked our developer to add link also inside SPPB menu.

Now all is clear, and we both are happy now :)

Thank you! :D

p.s. Did you change the image on the admin panel?

yes, you can do that in Admin template settings :)

Nice