LWN Simulator and Chirpstack

I used LWN simulator to create a device and virtual gateway and giving the port 1700 on gateway bridge. I gave the same device and gateway in the chirpstack but while starting the LWN simulator, I’m unable to see the gateway in Lorawan frames. How to resolve this?
Thanks in advance!

I assume you are using GitHub - UniCT-ARSLab/LWN-Simulator: A LoRaWAN nodes' and network simulator that works with a real LoRaWAN environment (such as Chirpstack) and equipped with a web interface for real-time interaction.. As this is not a ChirpStack component, you (also) might want to ask your question through their support channels.