NodeRedNinja: FYI: the Node-RED community provides helpful documentation — saved me hours of debugging.

2 hours ago · profile

My guess is the answer is in the logs. Try running a network scan and see if if it helps.

See also

• Migrating from SmartThings to Zigbee2MQTT — gotchas?
• Feature request: devices going offline in Home Assistant
• OpenHAB — is it worth the effort for beginners?