QUOTE(Incarnation @ Mar 16 2019, 10:27 AM)
Hmm If I top up few hundreds to 1K, it will paid to BOOST APP 3D-EC (with OTP), whereas below RM100, it will paid to BOOST APP SSL-EC (without OTP)

i suppose coincidentally, your 1st reload is new card to boost, so it will need OTP (3D transaction). then 2nd reload is <rm100 (card saved in boost), hence will be without OTP (non-3D aka 2D).
with the card still saved, you can try again with amount >rm100, see if you need OTP again.
QUOTE(BlacBeanz @ Mar 16 2019, 01:52 PM)
When register AMEX card to topup boost will be charged RM4? is this refunded back to us?
rm4 is preauth amount, purposely charged to the new card. it will be "released" back without you noticing it in your cc statement.
QUOTE(prosibu @ Mar 16 2019, 02:55 PM)
How we add money from non-saved credit card?
I cant find any option in boost
no way.
1st time always a non-saved card lor. then the card is auto-saved into boost.
alternate way, remove the card after reload. then next time you reload, will be from "non-saved" card lor. of course you will always get the rm4 preauth charge, but no big issue for cc reload.