My ETH casino deposit was stuck pending: replacing a transaction the right way

It was a Sunday evening with a big NFT mint going on, and I sent ETH to a casino with the fee my wallet suggested a few minutes earlier. By the time I pressed confirm, the network was busier. Half an hour later, the transaction was still pending, the casino showed nothing, and my wallet would not let me send anything else because every new transaction queued up behind the stuck one.

I had heard of speeding up and cancelling, but I had never done either. Here is what I learned that night and in the reading afterwards.

Every transaction from an Ethereum account has a number called a nonce. They go in order: 41, 42, 43. If 42 is stuck, 43 cannot be processed until 42 is either confirmed or replaced. That is why my wallet seemed frozen.

Speeding up means sending a new transaction with the same nonce, the same recipient and amount, and a higher fee. Validators pick the one paying more, and the old one is dropped. Most wallets have a "speed up" button that does exactly this. It is the right choice for a casino deposit you still want to make.

Cancelling means sending a transaction with the same nonce to your own address, for zero ETH, with a higher fee. If it confirms first, the original never happens. It is useful if you change your mind, or if you realise you used the wrong deposit address.

The gotcha is the race. If the original transaction confirms in the moment before your replacement arrives, the original wins. With a cancel, that means your deposit went through after all. So after cancelling, I always check the block explorer to see which of the two actually landed.

At the casino end, things were simpler than I feared. Once the sped-up transaction confirmed, the deposit appeared within a couple of minutes. The casino only sees the transaction that ends up on chain, so the replacement did not confuse anything. Support confirmed later that this is common on busy evenings.

What I do differently now:

I check current gas on a tracker before depositing, especially on weekends or during big launches.

I set my own fee slightly above the suggestion instead of accepting the default.

For larger deposits, I use a layer-2 network if the casino supports it, which avoids most of this.

I never send a second deposit to "push" the first one through. That just adds another transaction to the queue.

The other thing I do is pick casinos that clearly show which networks they accept and how many confirmations they need. When I was building a list of Ethereum casinos worth trying, the guides on CCR helped me narrow it down, and I checked each cashier's network list myself before depositing.

A stuck transaction feels alarming the first time. Once you understand the nonce, it becomes a two-minute fix.

Published 30 October 2026.