Trouble setting up TP-Link router

Hey guys so I moved into a new apartment recently and was told by my housing agency the apartment came with Internet and I just had to connect the router to the LAN socket on the wall and its good to go.

But when I did that with my TP-Link AX1800 the internet light was orange which meant it wasn't connected to internet. I tried asking my agent but he was unsure either.

Ironically, my neighbour who owns a Buffalo ‎WCR-1166DHPL/N told me he did as the agent said and it worked.

Am I doing something wrong?