Are you trying to access your mobile service? You may refer to this article for reference: TPG Mobile - Introduction to the new My Account
For other services, please make sure to use your Customer ID or Account number.
Let us know should you require further assistance.
I log in using my account number.
Please see the error below, when I log into my account.
Sorry, the mobile number on your account is missing or invalid. Please call us on 13 14 23 for assistance.
What should I do?