I applied for my cc last Friday and got approved yesterday, without submitting payslip, they still provide me credit limit of 30k++

I think they're giving credit insanely to boost their sales lah, end of year already, they need more KPI. Perhaps you can just give them a call? Because I called them to check the delivery address for my card, then they told me my card has just been approved, even though it's still "In Progress" on the website.