One client incompletely sychronized

I have a few days ago for the first time installed Nextcloud in my imac. The only other client is my MacBook Air.
Problem: The synchronized files are on the server, but not all are on the MacBook.

How can I get the Nextcloud to do its job?

Thanks,
Franz

Desktop clients apply some restrictions on replicated folders size, especially in case of external_storage and shared folders. Please double check your client sync settings.

I appreciate your response, thank you!
Meanwhile the problem dissolved itself, I guess by means of a version update. Now it seems to working fine.