Problem syncing photos from the cloud on Lightroom (MacBook Pro)

Hi,

It's been a few weeks that Lightroom doesn't sync anymore on my two MacBooks pro. I have tried to signed out and signed in. It doesn't change anything.

I've uninstalled, reinstalled... now all the photos disappeared and it still doesn't sync.

Here are screenshots of my syncing.

Please let me know if you can help me out.