Sync files preview won't appear in Creative Cloud

Sync files preview won't appear in Creative Cloud, I have only a blank file. it work fine when i download it but the preview and file type are missing.
I use the web browser to upload my files cause i have limited space on my disk to sync all the files shared.
i tried on google browser, firefox, Edge... and i have the same problem.
It work fine with my coworkers, but it fail with me..
Please let me know if you know how to fix that.
thank you all
