Hi Perico
Node-Red will take an additional 5 minutes to load after a reboot or power-up and is not accessible during that time.
For Node-Red access
If you configured Ethernet as WAN, go to “Administration” and “Access Configuration” and for Node-Red verify both “via LAN” and “via WAN” are enabled.
“Submit” at the bottom of the screen then “Save & Restart”
After the Conduit is fully booted, wait an additional 5 minutes then try to access Node-Red.
-Best Regards