It sounds like you solved your problem. Still, you might want to get a new router. If you are the only person using it, you should be OK. I replaced my old TP-LINK router because there were several people using here using it. It would randomly reboot due to being overloaded.
Any modern router will be able to handle PPPOE, since it is standard for DSL internet connections. I have a Netgear R6700, which is a few years old but is still being sold. It is fast (enough for me), easy to setup and reliable. Under $100. There are many other Netgear routers, up to $500. You certainly don't need a $500 router, as DSL does not support such speeds.
I have cable TV internet via Xfinity, and have never used PPPOE. But I see it in the setup options.
07-05-2020 10:45 PM