@melonman98 While the router is powered on press the reset button for about 10 seconds. When pressing the reset button you should feel/hear a click - use e paperclip or a toothpick.

@stephen435 This log message usually appears upon restarting the router. When router is restarted all previous logs are deleted.

@Zigwilly The easiest test would be to use the ethernet cable from the router's kit. Connect a computer to the router LAN port and you should know if its LAN port works or not. This is the basic way...

@Zigwilly The probability of two broken devices in a row is not very high. What are the cables parameters/characteristics and how did you test them ?

@Deiermeier This happens because a range extender can work in three different modes - Universal, WDS and Proxy. For more details on that matter check this FAQ. What will happen depends on TL-WR902AC...

@Zigwilly There are two reasons that could cause LAN ports not working. Bad cabling or bad ethernet ports. You already changed the router. This time try changing the cables.