What does error message "Your app is not registered with Paytm. Please contact Paytm administrator Team." mean and how can I solve and fix it.

There is nothing we can do

Paytm is only available for Indian users.

VPN

1. Try with VPN enabled.
2. Try with VPN disabled.

Clear Cache and Data

1. Go to App Info with holding your finger on the app.
2. Clear Cache and Data.