Deposits and withdrawals are different questions
A method appearing in a deposit menu does not prove it is available for payouts. Check the withdrawal route, account currency, minimum amount and any identity requirements separately. A payment service cannot make an illegal gambling operator authorised in Australia.
Compare the complete cost
Separate provider fees, conversion margins, bank charges and any operator fee. A zero-fee deposit can still incur currency conversion. Use the amount actually received rather than only the amount sent when reconciling a transfer.
When a payment is declined
Ask your bank or payment provider why. Do not mislabel a payment, split it to evade restrictions or disable a gambling block to get around a warning. A declined transaction is a reason to pause, not an invitation to find a bypass.