I didn't see a forum for this model so I tried to pick the next best one. I have a DGS-3627 Xstack Layer 3 switch. The problem is the former admin left without leaving the "keys" so now I can not login or even reset it. I tried to do a Shift+6 at boot to enter "Reset Configuration Mode" but it never entered the mode, just took me to the login screen. Is there a way to reset the device to factory defaults or at the least reset the administrator account?