My advice is that it is better for you and the team to immediately make improvements to withdrawal transactions so that gamblers can feel good service because withdrawals are one of the priorities that must be carried out by the team.
I hope that in the future the team can actually provide updates on instant withdrawals which aim to simplify and speed up the withdrawal process by gamblers.
With instant withdrawals, the casino that you are promoting can be considered worthy and has good service to users.
Remember, friends, don't let users feel disappointed there just because there are problems in the withdrawal process because it can damage the trust and reputation of your casino in the eyes of customers.
I think it's because they're still a small casino, so they're currently using manual withdrawal, they want to make sure people who want to withdraw aren't broke their rules. A big casino implementing instant withdrawal because they're not really care when the gambler only withdrawal small amount money.
15-30 minutes is still make sense, there are many small casinos will proceed your withdrawal after the next few hours.