Did you use your local Google account? Or you can try asking your friend to use his Gmail to order, should go through if it's a hk Google account.
Yes. Using the VPN created a HK google account (verified via SG phone though)
Everything went fine but just get cancelled at the final stage. Quite sad.
The address belongs to a friend's husband which both of them are not very IT savvy.. Asking them buy is a bit hard though.