Fichiers enregistrés sur le Cloud n'apparaissent pas malgré la synchronisation OK

sign out and then back in to your cc application on your sync'g desktop: http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html

add or delete a file from your desktop sync folder and check your web cc sync folder to confirm it's sync'g (and to confirm you're using the correct adobe id that you'll use in the next step).

if confirmed, sign out and then back in to your cc application on your failing-to-sync laptop using the correct adobe id used above.  use the cc application (file>preferences>sync) to double check your laptop's sync folder.  check that folder using your file explorer to confirm its files are updated.

if that still shows your laptop is not sync'g, there's likely a network (eg, firewall, hosts file) problem.

but, if you want to explore problems and fixes for the cc app on your laptop:

first try, resetting the cc app: To reset the Creative Cloud desktop app, make sure it's in the foreground, then press:

Win: Ctrl + Alt + R
Mac: Cmd + Opt + R

if that fails, try to repair
https://helpx.adobe.com/download-install/kb/creative-cloud-install-stuck.html

if that fails go ahead and uninstall/reinstall per the above link

if that fails, do a clean cc install following each applicable step:

uninstall every cc app including preferences, https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
then uninstall the cc desktop app, https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
clean your computer of cc files per http://www.adobe.com/support/contact/cscleanertool.html
check for, and if available, update your os
restart your computer (don't skip this)
reinstall the cc desktop app, https://creative.adobe.com/products/creative-cloud.
if you're unable to install the cc desktop app at this stage, use an administrator account (solution 4 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)
use the desktop app to install your cc programs/trials