Zip Code for application

Hi, there is no zip code for it. It is ok for you to write just detailed address.

Thanks, also how do I pay for my application? There is no payment form?

Hi, this is official information I found from the website of HK Immigration Department:
If the application is submitted to the Hong Kong Immigration Department direct by post, the fees in the form of a cashier order or a bank draft should be sent together with the application. The cashier order or bank draft should be issued by a bank which has a connected bank in the HKSAR and made payable to "The Government of the Hong Kong Special Administrative Region". No cash should be sent with the application.