From HB Bandai Namco 4, the bundle is not be available in certain Asian countries (example: Indonesia, Malaysia, Thailand, Singapore, Vietnam, Japan, North Korea, Taiwan). https://www.steamgifts.com/discussion/6ARbY/humble-bundle-humble-bandai-namco-bundle-4
I can redeem some game of the bundle from my country ID, it may work on other region I think.