If you set the relays in the clientsettings.cfg correctly (see below), and the installer did not use them, it is most likely because they are not accessible from that endpoint. Make sure the IPs to the correct Relays are correct in the lines and make sure the port is the port you used in your implementation.
You can also test connectivity by going to the relay diagnostics from that system.
Check the logs, when it first tries to register, is it using the relays from the clientsettings.cfg file?
If it is, what error is it returning when it does?
If it is not, then make sure the file name and the Properties are names correctly.
Also, is the relay you are connecting to an authenticating relay?