Sometimes transactions fail because of issues between our payment gateway and the card/bank you are using. We would advise you to try with another card and see if the payment goes through.
If that still doesn't work, don't worry!, just bank transfer the required sum to us and share us your proof of payment via our live chat support. Here's our banking details:
Postal Connection Sdn Bhd
As this is a manual process, please allow up to one working day after you have sent the proof of payment to update your credits.