Hi,
Thanks for your quick answer.
Yep, I did install the Arnold theme on my wp-admin. And then the child-theme…
My problem is that I don’t understand how the page builder works… For example, I add image modules, and then text blocks. And then I set the Custom Grid Portfolio template. The result is that I get a lot of empty ‘demo’ modules, and at the very bottom of the page, my images and the text, instead of my images acting like a ‘demo’ module. How do I fill the ‘demo’ modules with my images and the associate text (and choose the number of modules) ?
The page builder on my wp-admin doesn’t look like the one in the ‘sea’ theme video demo, for example. I would send you a screen cap of the page builder I have if I knew how to place an image in this post…
Thanks in advance.

PS : My supplier is OVH