Thanks for raising this to us, I was able to locate the account and confirm that the NBN box and the modem/router has been shipped separately and both has been delivered.
I sent you a private message for the consignment number.
What brand and model number of modem you're trying to use for the service? You may visit this thread on how to use a 3rd party router.
Let us know how it will go.
Thanks. You need to configure the settings of this modem in order for it to connect to the TPG server. You may refer to this link for the required information: https://www.tpg.com.au/support/nbn/generalsetting
Let us know should you need further assistance.