Gateway last seen never

I am using the kit p-nucleo-lrwan3 kit from ST that comes with a sensor node and a gateway module. Everything is working fine, even gateway is receiving data from end node. But I don’t know why is my gateway still displaying last seen - never. If anyone has setup Chirpstack with LRWAN2 or LRWAN3 kit could you please tell me how did you solve this problem.

The last seen is driven by the periodic stats that (most) gateways send. By default this is every 30 seconds. In case your gateway does not send this, then this would explain the “never seen” issue.