For months now, Kris+ has been offering spend promos, and Singapore AIr continues to dole out the goodies through its payment app. For 11/11, they are being extra generous, giving S$11 rebate when you make a purchase of at least S$11 until 13th November 2022. On top of this, there is also a S$20 rebate for a transaction of at least S$100 for the month of November.
As a Kris+ member, you should be automatically enrolled for the S$100 spend promo, but you will need to manually start the 11/11 challenge found in the Challenges section of the app....