My Cloud Ex2 Ultra complete reset recover data?

My Cloud Ex2 Ultra with OS5 have been fully/ Quick system reset without remove 2TB HDD.
Now reconfigured with same, but HDD is displaying empty.
How can recover data? Please help me.

Hi @Samar_7,

Please contact the WD Technical Support team for best assistance and troubleshooting:
https://support-en.wd.com/app/ask