My Passport not storing data

Have a My Passport Ultra. Using on Dell desktop running windows 10. Use backup program within settings.
Submitted 17G data for storage. After 30min indications still storing. How to tell when system is working?
Plus, no customer support available. Who to contact?

Hi @Backup1,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:

After filling out the form, please allow us 24-48 business hours to review and update you on your inquiry.