How to enable all channels for AU915?

I’m programming some hardware that requires sub-band configuration. As I understand it, LoRaWAN for AU915 on ThingsNetwork by default transmits and receives on SB2. However, when I change the Frequency Plan on my RAK7528 gateway to SB5 for example (921.6 - 923MHz) my gateway is no longer able to reach thingsnetwork.

Is there a configuration file I have to modify via ssh? Any help/pointers would be great. I am relatively new to all of this.

Hello @cameronk and welcome to the RAK forum,

Have you changed the frequency plan in the TTN configuration of the gateway ?

From the dropdown menu select the sub band that you want to configure.

Best Regards,
Nikola Semov