Hi cosrush,
I use a TP Link Archer vr2800 with my OR/PN, all you need to do is set up your preferred router with your account details and password and it should happily handshake with the ONT. make sure it is in Router only mode and you connect into the WAN port. No need to have two or bridge.
Best of Luck
Dwight.
He knows that.
You should read the thread before replying. He had it working like that, it simply had slow throughput due to QoS.
There is no username/password handshake with the ONT. That happens at your ISP.
The thread was resolved 4 weeks ago.