Welcome to the Community @Stacy
Before attempting the troubleshooting steps, TPG recommends that you:
2. "Power cycle" your ADSL/NBN modem. This means turning your modem off and waiting for one minute before turning it back on again. This allows your modem to reestablish connection to our server.
If you are still unable to connect to the Internet, please proceed with the troubleshooting steps indicated on this link: https://www.tpg.com.au/support/nbn/troubleshooting, https://www.tpg.com.au/support/problems_connect_internet.php
You may also check our articles:
Feel free to search Community for help with your issue, or contact us and we'd be glad to assist you.