Try giving some more details, what type of modem, what type of internet adsl or nbn?
I have a tp-link modem or Archer VR1600v as people are calling it and guests can use it no problems.
They simply search for networks, choose mine and I put in the password. Just make sure they don't save the network. My kid once used the neighbours internet, they let him and they put the password in and saved it. I found him using it all the time!!
Welcome to TPG community!
Are you currently using the TPG supplied router (TP-Link C1200) for your NBN Fibre to premise service? If yes, please follow the simple steps below:
1. Using browser access modem's GUI by typing in 192.168.1.1. and type in the default UN/PW 'admin'.
2. click on 'Basic' and then click on Guest network
3. From there you will have the option to edit your guest network profile.
Please don't hesitate to reach out should you need further assistance.