For a device to be used in the direct mode, the device must be first 'unlocked'. The need for an unlock is a legacy feature.
To unlock a device, simply select the device(s) to be unlocked in the OEM Server device grid, and then select
Device Operations -> Set Config Only

The following dialogue box will appear:

Make sure Config Only is ticked, and click OK.
You can tell a device has been unlocked by the following:

2. Entering our server details under the third party server configurations
SERVER: DATA.GPSIOT.NET
PORT : 9137