Balance statement = Your outstanding payment that needs to pay on/before your due date. Basically it is for all the spending incurred during your last statement cycle.
Outstanding statement = Balance statement + your unbilled transactions (which will appear in next statement)

I just went in to looky see. There are a few options under Fund Transfer - Any Amount, Minimum Amount, Statement Amount, Outstanding Amount. If you use the Pay option (your card should appear under Favorites) and choose your card, you can just enter the amount you want.

Maybe maybank2me doing maintenance when you went in last nite? I've encountered weird behaviors between 12am when they start daily maintenance all the way until 2am.

I think that is because your balance statement not include the cashback
.. once cashback in
.. your outstanding becomes lower... they only allow you to pay what you owe... so try paying outstanding balance and see... should work ... having said that ... your outstanding amount should be lower than statement amount too ...

Your outstanding balance is 0. That means you have paid off. Check your transactions.

Statement balance will not reduce until next statement cycle. Just see your outstanding amount is reduced or not, in your case already zero means everything is cleared.

think this way.

cc statement balance = your other monthly bill statements, e.g. water bill, electricity bill, mobile bill (postpaid), unifi/broadband bills, etc

statement balance = historical billed (usage) amount. because it's a cc, you use for 1mth (i.e. statement/bill cycle), then only you got billed each "cycle" and need to pay. cc bill is like a postpaid bill. use first, pay later.

since it's a historical bill, you cannot CHANGE history information    what has happened (used), has happened.
back to other monthly bills, once you pay the bills, does the bill goes back to ZERO? no, right? 
now, Oustanding Balance = tabung hutang bank  the amount fluctuates depending on your usage (add/increase) and payment (minus/decrease).

some ppl will always payoff whenever they see any amount in Outstanding Balance. well, that defeats the benefits of having a cc. might just use Debit Card instead 
ok, below is a simple illustration that i did previously ...

wrong

Outstanding Balance is the MAIN "bucket" for all your current outsanding.

on current Statement Date, the used amount is cutoff between previous statement date -> current statement date will be your Statement Balance. this is your "monthly" cc bill/statement.

same as your other bills. always a certain cutoff period, right?
make it short, ALWAYS pay STATEMENT BALANCE by DUE DATE. simple.

Outstanding Balance = 0

you already paid your 8 Oct bill, right?

ask you, when did you make your last cc payment?

your payment @ 25 Oct was to clear Statement Balance as of 8 Oct (Statement Date aka BILL DATE) <-- this is your CURRENT Statement Balance.

Statement Balance WILL NOT CHANGE because that's the historical bill @ 8 Oct.

previously, Outstanding Balance = RM75.80, then after payment @ 25 Oct, Outstanding Balance = RM0.00.

in short, you owe NOTHING.
assuming no spending between 9 Oct - 8 Nov ...... your Nov statement would be generated @ 8 Nov, and NEW Statement Balance = RM0.00

yep, any spending between 9 Oct - 8 Nov, all will be statement-ed on 8 Nov, your bill date. this amount shall be your NEW Statement Balance.

Payment Due Date (PDD) shall be +20 days from 8 Nov, hence must clear off your 8 Nov's Statement Balance by 28 Nov.

yes, can change the statement date. last time i asked, here are the dates: 3 6 8 12 14 18 21 24 26 28 EOM (end of month)
fyi, here's your current statement cycle and due dates...

charged into respective card.

pay your cc statement as usual.

Call CS to remove it if it's an eyesore to you.

TGV with maybank card promo, can use amex