@Tempe 

1. Unpack the TP-Link router and screw on the external antennas (if the unit has them).
2. Turn off your computer’s Wi-Fi if it is on.
3. Plug the Ethernet cable into one of the switch ports (usually yellow in color), then plug the other end of the cable into your computer’s Ethernet port.
4. Plug the power adapter into an easily accessible wall outlet or power strip, then the DC power jack into the back of the router. If there is a power button, depress it to turn the router on.
5. You need at least one computer through which you can setup a tp-link router for the first time.
6. Open your Web browser and enter http://192.168.0.1 in the address bar. This is the IP address of the router. A prompt for an administrator password should appear.
7.  Log in to the interface:
   Username: admin
   Password: admin
8. Navigate to the System Tools menu and click the "Firmware Update" submenu.
9. Click the “Choose File” button and select the appropriate Commotion “factory” image for your TP-Link router. Make sure the router model number and version match.
10. Click the “Upgrade” button, and select “Yes” when the router asks you to confirm.
11.  The router will reboot. Wait a few minutes, and then go to http://thisnode in your Web browser. If you see the Commotion screen, congratulations! You now have a Commotion wireless router.
12. You should continue to the Configure Commotion document next. It provides instructions on how to configure the Commotion software for the first time.

@Tempe I bought the same model for working on my but still the problem persist