Any thoughts or suggestions?
The Orcon router out of the box should just work (assuming Bigpipe do Port auth and not username/password auth).
In saying that the Orcon NF4V is still technically owned by Orcon. If you have just churned they will be making contact to get the modem back at some point soon.
Might be a provisioning issue then if neither manual or Quick Setup Wizard works.
Just to confirm you are connecting in VDSL mode under Device Info -> Statistics -> xDSL.