Was your Telstra broadband ADSL or NBN?
If nbn, you might only need to set your TPG username and password in the PPPoE section of the setup. Look for a quick setup wizard.
What model router is it?
Hi there carelpieters69
Welcome to the community,
Could you please send me a PM (private message) with your CID (customer identication number) or your mobile phone number so can look at this service for you