DI-524 PPPoE

Hi everyone

My first time on this forum, so I hope someone can help me.

I live in central eastern Europe and have rented an apartment where there is a direct cable internet connection (no modem) that requires a user name and password. I am told by the ISP that I can only have one computer connected. Most of the time this is fine but occaisionally I need 2. So I dug out my old DI-524 Wireless router and tried to set it up.

I set it to PPPoE with the user name and password and cloned the MAC address from the laptop but it will not connect to the internet.

Am I missing something basic?

Help please.