The saga of Nendoroid Hatsune Miku: Support version is finally over in good ending, as GSC has finally included both Indonesia and HongKong into their Shippable Country list (which is previously unavailable for some reason) and resolved the credit card transaction problems, so they can now start accepting order again.
Here is what they said:
<< Can accept orders now! >> Goodsmile.ecq.sc can now accept new orders, recovered from Credit Card transaction problems. Thank you for your cooperation.
I have secured my pre-order for the cute cheerleader. What about you, Nendonesian? ^^