Hi @kenmcnoe . With FTTB, the router plugs directly to the wall socket. The Velop doesn't have this type of connection. The Velop could be an access point through the TPG router, or that router could be put in bridge mode. The Velop manual doesn't have much detail.
What is the model of the extender and the router?
How are they connected?
As you walk through the unit, do you go through a dead spot?