Found that there is only 1 or 2 payment gateway that is suitable to Singapore context. These 2 options are link to credit card but not to local bank. We are now using HitPay to integrate into our website payment to provide comprehensive payment scheme which is suitable to our client based. This mainly include local bank payments, grabpay and atome.
Hope GHL is able to bring this into the IPG for Singapore clients. It will greatly help for the ecommerce business platform.
Here is a link to the hitpay website : https://hitpayapp.com/