How to associate postage prepaid account to My EC-ship account?

In [My profile] > [Hongkong Post Account] > [Postage Prepaid Account], you can click "PP Account Association" on the left and then enter the your PP account no. and the activation code.

The activation code is provided by Hongkong Post and has been mailed to you before. If you didn't receive or lost the code, please contact hkpo@hkpo.gov.hk.