The name on the sending account
A transfer sent from an account in someone else's name will usually credit without complaint, and then block the first payout. Withdrawals are paid to the registered name only, so the money arrives and cannot leave, and correcting it afterwards means a support ticket and a document rather than an edit.
It is the single most common reason a first withdrawal stalls at an operator that is otherwise paying everyone else in minutes, and it costs nothing to avoid: use an account in your own name the first time and every time after.
The rails by name, and the hours they keep
FPX is not a wallet, it is a door into the bank's own online banking, so a Maybank2u, CIMB Clicks, PBe, HLB Connect or RHB Now login happens inside the transfer. That also means FPX inherits the bank's maintenance window, usually a short slot in the small hours when one bank at a time goes offline for an update.
DuitNow and the e-wallets do not share that limitation. Touch n Go eWallet, Boost and GrabPay move at three in the morning as readily as at three in the afternoon, which is why they carry so much of the late night cashier traffic even though their per transaction limits are lower than a bank transfer's.
Which rail suits which amount
Small and frequent belongs on an e-wallet. A top up of a few tens of ringgit through Touch n Go eWallet or Boost clears in seconds with no bank login, which suits the member who adds a little most evenings and collects the 20% first daily rate each time.
Larger and occasional belongs on FPX or a DuitNow transfer from the bank app, where the ceiling is high enough that a RM100 deposit or a four figure one goes in a single movement and appears on the statement with a clean reference. Crypto sits in a third place again: slower to set up, indifferent to banking hours, and carrying its own extra on top of the usual reload.
Paying real money into an online gambling account
Putting cash into an internet gambling account is a purchase of entertainment, not an exchange that is sure to come back, and it is worth being plain about that before the transfer. Nobody should pay in money that is needed elsewhere, and a real money balance is best treated the way a night out is treated, as spending rather than as a stake in an outcome. Most members here gamble for fun a few evenings a week, and real money gambling works best when the Responsible Gambling limits are set before the first transfer rather than after a bad one.
With that said, the mechanics are ordinary. The cashier takes a card or a bank account, credits the balance in ringgit, and a wager placed from it runs against whichever game was opened. A bookmaker, a reel and a table all draw on the same pot, the prize goes back to the same place the cash came from, and nothing else about online gambling is complicated at this end of it.
What the money is being pointed at
A deposit at an online casino is usually made with one thing in mind, and the rail chosen tends to give it away. An e-wallet top up on a Wednesday evening is nearly always 4D numbers for that night's Magnum, Da Ma Cai or Toto draw. A bank transfer on a Saturday afternoon is nearly always the Premier League or Liga Super card.
A larger weekday deposit is usually the reels, because a bonus taken on JILI, PG Soft, Spadegaming or Habanero needs room to clear its requirement. The quiet one is the late night wallet top up that goes straight to an Evolution or CT855 baccarat table, where the money is not clearing anything and the member simply wants a seat to watch a shoe play out. None of those is a better bet than another; they are different kinds of gambling bought with the same ringgit.