It is because nutaku is locking you in your first payment method and you are stuck with it. That means if you got suddenly problems with that payment method, you are screwed.

Nutaku/Probiller has no history as far as my account is concerned. Never had a Nutaku transaction before the Black Friday deal came, and even when I tried purchasing, they never got to process it anyway - it was being declined from the get-go.

Originally Posted by Overload

It is because nutaku is locking you in your first payment method and you are stuck with it. That means if you got suddenly problems with that payment method, you are screwed.

It's actually probiller/epoch that do that, nutaku has nothing to do with it.