Originally Posted by
Elvasoshexai
The change flight option online seems to be broken as I keep getting an error the booking is not found even though I went through manage my booking on their website and haven't tried calling / WhatsApp yet
Instead of "manage my booking", you could try to click on "flights" from the main menu. Then select "redeem with miles" on the sub menu. Then on that page, scroll down and click on "flight awards rebooking". That may work. It should be more straightforward and user friendly.