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 16B. Specific T&C - FAVEPAY Can I use Fave promo codes when using GrabPay as a method of payment? Can I get a refund to my GrabPay wallet? How do I make a FavePay transaction on PayLah! app? How do I disconnect my GrabPay wallet from Fave?