I was wondering if it was some legal thing. When I compared the 23andme options for what they tested in the US vs. HK there were a number of nutrition/fitness tests they didn't offer. Maybe they can't offer those services in HK for legal reasons?
But I found Govita to be quite responsive. You could email them and ask. (I met the CEO etc, and talked to him about the company, as I'm generally interested in genetics).