A code-backed offer only activates when your deposit clears the stated minimum, and at OnLuck Casino that threshold is 45 AUD for the welcome offer and code promotions such as ONLUCK75. Deposit 44 AUD and the code simply will not attach, even if everything else is correct, so confirm the amount on the cashier screen before confirming the transaction.
Payment method matters too. Some offers exclude deposits made with certain methods, and the eligible list sits in each campaign's rules. Before funding your account, review the full range of OnLuck Casino payment methods and pick one you know qualifies, so your deposit, code and bonus line up in one clean step.
Timing is the final piece: reload codes like ONRELOAD require at least A$75, and the Tuesday spins codes start at 45 AUD. Check the threshold attached to your code, enter it in the deposit screen's bonus field, and only then confirm the payment.