TTN in USA

I have installed properly a Tektelic Micro-lite (Pico-GW) gateway. I have used the following TTN router, which is the one for Console3: “nam1.cloud.thethings.network” and for the LoRaWAN.json, I have used US915 SUB-BAND 1.
I need to configure the same Gateway to run under US915 SUB-BAND 2. What is the correct Gateway router I should use for my Customer.json
Can I still use my account for Console3 ?