What does the error above mean?
This means that your bank or card network is temporarily unavailable due to a downtime.
What can you do about it?
Kindly try this transaction at a later time.
In the interim, you can save via bank transfers. Please follow these steps to do this;
Go to the said Plan
Click on top-up
Enter the amount, then on the payment method click switch and select bank transfer.
A temporary account number will be generated for you.
Proceed to make payment to the account number immediately as it expires after 20 minutes.