Brume 2 Constant blinking power light

I have a Brume 2 I am having constant issue with power light blinking ISP is ATT modem in IP pass through mode connected to a Opnsense device I have the brume behind of the device. When I connect a cable to LAN 1 port the device seems to be stable once I disconnect the cable from LAN port the power light starts to blink. I have reset the device try Firmware 4.5.0, 4.5,4.6.2

Is the WAN port of Brume2 connected to OpenSense device, right?

What lower device is connected the Brume2 via the Brume2 LAN

yes the wan port is connected to opnsense router My laptop is connected to the LAN port on the Brume laptop running Zorin OS

Let me further confirm,

  1. Would the power indicator light turn blue and blink if the LAN port is disconnected while the WAN port remains connected?
  2. Any notice in the GL GUI -> INTERNET Interface? like key words 'no internet'
  3. Could you please export the syslog (GL GUI -> SYSTEM -> Log) and PM me.