Hi there,
Right off the bat, I would recommend replacing your Router with a better quality brand such as Cisco/Linkys or Netgear. TP-Link's equipment is sketchy, and the driver software is horrible. Each of their devices I have encountered at Customer situations have crashed the computer they connected to (adapters), or crashed the LAN they were plugged into (Routers). New brand-name Routers are cheap; under $60 from Radio Shack, or Walmart. You get what you pay for.
It's also very unlikely to connect to PPPoE, as very few ISPs actual use this as a connection method, as least in the US.
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