3. Please check if the LAN interface has bound to the PoE port (eth1), refer to below screenshot.
** You can reset the router to the default setting.
a) Go to “Network / Interfaces”. Click “Edit” on the LAN interface.
b) Check “Physical Settings,” make sure the “Interface” bound to “eth1”.
c) And also, the “Firewall Setting” should bind to the LAN zone.