If you have only just added a new iGate you should wait a few minutes before resorting to this tool.
This will automatically set your iGate's location to the same as the computer/phone you are using just now. It does not make any changes to your iGate whatsoever - it's just a database entry for this system as your iGate has not beaconed its location since joining.
You need to do this if Beaconing and/or TX is disabled on your iGate.
You can also try fetching its location from arps.fi by clicking the Fetch button first