Under what circumstances will NS ignore the gateway connection?? For example, the gateway was disconnected. After reconnecting, NS did not recognize them. I need to restart NS, and then the gateway will be refreshed in a few seconds on the web of Chirpstack
ChirpStack will only ignore gateways in case the gateway is not known and unknown gateways are not allowed. In any other case it is either a connection issue or a mis-configuration (e.g. MQTT topics).