They don't even create a unique deposit address for each of users. They give a single address to all users and ask them to provide their transaction ID.
This system can't work in the long run. It can only work with a very small use base, but if they want a future in this industry they have to change this as soon as possible.
@Pitibet
How many members do you have working in your support team 24/7 who credit coins to player accounts? You need staff 24/7 if transactions are to be credited manually. Consider a scenario where you suddenly receive 100s of transactions, how are you going to credit them to the respective accounts in a reasonable timeframe?
How will your staff deal with other user inquiries if they sort out deposits around the clock? How big is your team?
We have enough staff right now to process all transactions and as much work then we will increase staff too.