I thought of applying this maybank 2 gold just for the purpose of 5% cashback on weekend for petrol, however I did a tiny research and found out that this is a new promo by maybank, means at anytime they can change again right? (eg: 5% cashback on everything change to 5% cashback for dining only)

last month. never say permanent, but it is a card benefit now, not time limited promotion.   

how to get maximum treat point redeem 1.25%??
i check in the catalog redeem for RM100 voucher need 46400TP, which ~1.08% only.

Looks like that is the max CL they are willing to give you. You could call and tell them to split your CL to get Maybank2 card. Is it worth it for you to hold so many cards?

Means you're already maxed out in terms of limits being offered by the bank

No such thing as can't apply for cards or will be rejected because you applied for other products recently.

They evaluated your credit worthiness and are unable to provide you further limit.

Just put FD if you're desperate lor. Later good paymaster can write in to release.

example, you have 6k in ikhwan card, split 2k credit limit to M2C, then Ikhwan credit limit become 4k.

Split limit from your current Ikhwan higher chance. Let say your Ikhwan CL 10k, you can split CL to Ikhwan 5K and M2C 5K

I tried, but the statement doesn't show cashback.
Transaction and posting date is on weekend.

use above as reference.

think statement date as your telco postpaid bill. they bill u once a month, for previous month's usage. same to cc. they issue you statement for previous month's spending.

best thing for cc is there is 20-day interest free period to clear the statement amount.
Aeon cc is slightly different than banks. their statement date is fixed to 10th of the month, and the payment due date (PDD) is fixed to 2nd of the following month. that's around 22-23 days between statement date -> PDD.

your example above is correct.