Problem solved. Save my My cloud home. I can't access my device

You didn’t write what doesn’t work… If you follow the instructions then Debian 11 should work 100%. There is a problem with installing updates and OMV6 due to the fact that the Debian 11 snapshot is outdated. This is solved by manually setting the current date command, after installing Debian 11 and before installing OMV6:

After installing OMV6, be sure to configure the NTP time synchronization server in it.

“Alternative”)) download link: Install Debian on WD My Cloud home - My Cloud Home - Personal Cloud Storage / My Cloud Home Ideas - WD Community