If your router shows that it is connected but does not have an Internet connection, check below.
1) Test Internet Connection
2) Test the WiFi Network
3) Test the LAN (Ethernet) Network
Wi-Fi has turned on by default, and the default Wi-Fi hotspot Outdoor-WiFi-xxxxxx or Cellular-WiFi-xxxxxx is non-encrypted, you can use your phone or computer to connect the hotspot to see if it has internet.
The DHCP function has been turned on the router by default. There is a LAN port on the PoE adapter. You can connect another router (to its WAN port) or computer to the LAN port on the PoE adapter. Make sure the router and computer have turned on DHCP. You can also connect with static IP, make sure to use the correct router IP address and gateway.