There could be several different reasons you're seeing a decline error message or your payment won't go through.
If your debit or credit card was declined, check to see if: 

1. Insufficient balance from the debit/credit card account

2. Card is not 3D secure or Incorrect OTP authentication and CVC code

3. Incorrect billing address

4. Credit/Debit cards are not registered for international transactions 

To avoid this in the future, please take note of the following solutions below: 

1. You need to activate the international payment feature on your credit/debit cards

2. Make sure you have sufficient funds in your account 

3. Register your card with your provider for 3D secure and Input the correct OTP authentication code, billing detail registered in the card, and the right CVC code

Or try our alternative payment options HERE