When Notebooks stores its documents in iCloud Drive, there may be situations where iCloud repeatedly attempts to synchronize a large number of files. During this process, Notebooks may respond slowly, appear stuck while syncing, or in some cases even fail to launch. This usually
Synchronize Through iCloud Drive
With an active iCloud account, Notebooks can store your documents on iCloud and automatically synchronize them to all connected devices. When set up this way, Notebooks uses a predefined folder on iCloud Drive (iCloud Drive/Notebooks), so you should not create that folder yourself.