Help Can't Change Date/Time on my 4 channel Net DVR Avtech

Hi I hooked up a 4 channel network DVR that my father gave me (does not have a name on it) it simply says 4 CHANNEL NETWORK DVR.

I dont have a manual, but I installed everything correctly and the DVR and VIDEO WEB SERVER 5 software works great with one exception.

I cannot for the life of me figure out how to toggle to change the date/time.

I can get into SYSTEM by pressing MENU then Scrolling down to the DATE and hitting enter.

Then I can scroll over the date/day/day of week etc... - however I cannot toggle to change the date/year/day etc. I hit every fricking key nothing toggles it.

Can someone help me or is my DVR broken ??