Its got nothing to do with AEON. It is because the payment was made through POS Online.

I called up Hong Leong Bank and asked why I didn't get cashback for the month even though I hit RM5,000. They said that RM3,000+ was POS ONLINE, which is recorded as government spending, hence ineligible for any cashback.

will Burn Off if  spend less than RM2000 / Month

HLB Fortune- need minimum spending RM2k to qualify CB this is a good card if you could spend at least RM 2k but capped at RM 5k (RM 50 cash back).
that one needs to spend at least RM 2k per month and it will not be accumulated. If cannot achieve then CB burn.

Confirm burned if less than 2000. No carry forward.