I had the same error on the weekend, but it was because something was wrong with the connection (I couldn't load web pages such as Google either). Try disconnecting and see if you get the same error.
Good day @Pockets81,
Welcome to TPG Community!
We've managed to pull up your account using your Community details and learned that you were able to contact our Tech team and the case was escalated to our Engineers. A TPG Technician was sent and was able to resolve the issue with your internet speed.
Should you require further assistance, please let us know.