Welcome to the Community!
The installation or activation of the NBN service may take less than 10 days once the order was processed. However, there are instances that the NBN Co detected a fault within the network that may affect the installation/activation of the service.
We were able to locate your account using your community details and learned that your service has been activated. The modem/router that you are using is configured incorrectly, which is why you are not able to get the internet to work. You may refer to this article that will guide you on 'How to set up your TP-Link VR1600v modem'.
Let us know if you need further assistance.