Ann: SPP Closed, page-26

From the bpay webpage on CBA website:
If your payment is made on a bank business day before 6pm (Sydney / Melbourne time) it will be debited from your account instantly and processed that day. The biller will acknowledge the payment as having been made that day and should process the payment the next banking business day.
If you make a payment on a weekend or public holiday, or after 6pm (Sydney / Melbourne time) Monday to Friday, the payment will be debited from your account instantly and processed the next business day. The biller will acknowledge the payment as having been made on the next banking business day (this does not include weekends or public holidays).

The statement "The biller will acknowledge the payment as having been made that day" in the first paragraph suggests you should have applied within the announced timeframe. Good luck!