ixpand: back up iPhone with "optimize storage" enabled?

With “optimize storage” enabled, only low-quality versions of the images are stored locally on the iPhone. Is iXpand clever enough to download the complete file from iCloud before backing it up, or does it back up the low-quality version?

Have you checked our knowledge base articles?
https://shop.sandisk.com/support

The AutoBackup feature can backup data from iCloud, however please be aware that it may take longer to backup.

Try this one.

Have you opened a Support Case?
If not, contact SanDisk Technical Support for assistance.
https://shop.sandisk.com/support/contact-us