What happens if I do not have enough GrabPay Credits? June 26, 2020 06:45 Updated If you have insufficient GrabPay credits, you can top up on the Grab app before proceeding to make payments on Fave. Related articles Can I use Fave promo codes when using GrabPay as a method of payment? How much are my GrabPay credits worth on Fave? How can I use GrabPay on Fave? I need a receipt for my purchase, how do I get it? Can I get a refund to my GrabPay wallet?