GoodNotes 5 for Mac requires macOS Catalina (10.15).
To sync your documents and data across devices, please make sure that the following conditions are met:
- You're using the same iCloud ID on all of your devices
- "iCloud Sync" is enabled in GoodNotes om all of your devices in Menu > Settings > iCloud
- The checkbox next to GoodNotes is checked on your Mac under System Preferences > Apple ID > iCloud Drive > Options
- You have enough storage space available in iCloud Drive
If it is still not syncing, please export the diagnostic data from GoodNotes on your Mac under GoodNotes > Menu > About and send it with us using the form below this article.