Your Cashback status will change from 'Pending' to 'Confirmed' after the partner store's Claim Time has been fulfilled and the order have abided the partner store's terms and conditions.
Do note that Claim Time varies for partner stores and is subjected to each store's cancellation, returns, and exchange policies and will typically take up to 75 days while some would be longer. This allows for the partner store to validate the order and to prevent fraudulent transactions.
For travel stores, Cashback will only become 'Confirmed' within 60 - 120 days after your travel has been completed. This means if you booked your hotel on 1 Jan 2018 and will only be travelling on 30 Jun 2018, your Cashback will become 'Confirmed' by 31 Oct 2018 or earlier.