Backup files contain garbled file names. Steven Chan July 19, 2017 10:53 Updated Follow If you are using Windows and you have non-English document names, the unzip process may not be able to read the file names correctly. You can also try using Zipeg instead. Related articles GoodNotes is not shown in iCloud Drive. How to migrate my existing documents to GoodNotes 4? How to restore from backup files?