What type of NBN connection do you have?
What was the original problem needing a replacement modem?
Could you post a photo showing how the cables are connected from wall socket to NBN box to wifi router.
What lights are lit on each box?
Where does the message about wan cable disconnected show up?
If you have only one box (wifi router), you must be FTTB if in an apartment or FTTN.
In the photo, you've shown the cable in the wall socket. What port is it connected to on the router?
What model is the router you bought?
What settings did you use?
That is a Router, not a modem.... thats why it doesnt work.
Fibre-to-the-Node (FTTN) and Fibre-to-the-Building/Basement (FTTB) NBN connections will need a VDSL2-compatible modem, and its easiest to use a modem-router for this connection technology; like ADSL, FTTN and FTTB connections to the NBN access network utilise VDSL require a connection to the telephone wall socket.
I’m screwed until tpg send me the replacement.
I'd be sending a PM to a Mod here requesting to check on this mystery modem.
I've had two modems sent to me in the past 6 months (NBN & FTTB) and both were sent via StarTrack and were received in 48hrs..... you say over 2 weeks????? Something not right.