Try re-flashing the DOM with CD-ROM. Make sure you have the exact ISO file size. Please save your settings. Are there any Event ID errors from the Microsoft side. If this does not work send logs to support@open-e.com

Then make sure to leave in LDAP mode and try the following:

Removed from NAS server name from the Windows, Server manager

Then make sure to synchronize clocks on all and have proper NTP server for this (I think you may have checked this just checking).

Then try again with PDC and disable trusted domains for tests.

If that fails send logs to support@open-e.com