Thanks for that however that only upgrades equipment does not allow parameter change.
I have now solved the problem. Right click on NVR screen select System setup - System Admin - User - Edit user - tick all - OK - OK
Using browser enter the NVR IP and sign on using account (normally as set Admin blank password)
Select Setting - Encoding Settings Select the channel (1 to 4) - Select the correct resolution setting (available 1280 X 720, 1980 X 1080, 2304 X 1296) - save the change.
I now have all 4 cameras working correctly