The system has been designed in such a way that, when you try logging onto you portal on a new device or browser, authentication code will be sent to your email before you can proceed.
Report gathered by seekersnewsgh indicates the authentication codes do not come to the emails.
Here is the feedback you get
Logging in on a new device. We’ve sent a confirmation code to your email to authorize this browser. This link will expire in fifteen (15) minutes.
It can take about three (3) minutes to receive the confirmation email. Please remember to also check your spam.
According to the NTC, the issue has been resolved and users of the platform can now receive their authentication codes.
Kindly Login to the tpg Portal and check your email for the code. If the code is not in your messages Kindly check the Spam messages or Junk messages.
If error keep appearing when you try to login, Try to clear the browser and try again.