Lightroom Classic does't Sync all Photos

Hi

I created a new Lightroom Catalog and wanted to sync all my photos which are saved in my Adobe Cloud to that Catalog. It started to import my synced photos but somehow didn't sync all of them.

Under Local Activity it's still syncing, but the Sync Activity in my Settings is empty.

My LrC is updated to the newest Version and there are also no deleted photos or sync issues in Lightroom Online.

It works perfectly fine while sycning the photos to a new Mobile Device.