Usually such issues are related with certain restrictions placed on the card by the issuer. It may be that there is a region restriction on it. Please note that G2A is originated in Europe, which might be the reason of this rejection. In any case we suggest contacting the card issuer to learn more about this issue.
If you have any further questions or doubts, keep in mind that you can always find additional information on G2A's FAQ or by contacting us on Live Chat or writing at helpdesk(at)g2a.com. Our consultants are there for you 24/7.
See you again at G2A!
Thanks for the quick reply G2A! You seem to have faster customer service than this actual site's company.
Anyway, I am still waiting for a response from the GCash team.
I have been in contact with the Facebook page but they take ages to reply. I have been told that my personal details were not properly uploaded to their system and asked if I surrendered my ID during KYC (in which I did). That's about it so far. I still haven't been able to use my MasterCard which makes it rather useless at the moment. I hope someone from GCash responds. Thanks.