Location outside supportd list

[JDRoberts]

It’s best to always use the hue bridge. See the FAQ (this is a clickable link)

FAQ: Do I need the Hue Bridge/Hub to Use a Hue Bulb with SmartThings?

Yes. The only officially recommended way to use Hue devices with SmartThings is by using a Hue bridge. There are several reasons to use the bridge. Other Integrations There will be a number of other integrations available to you which you may want to take advantage of. Use of Hue Scenes you will be able to activate scenes created with the official Hue app, which at the present time offer many features not available in the smartthings scenes feature. Even just the ability to blink the lights. The easiest way to access scenes from the Hue app is through the following custom edge driver or IFTTT, but there are other ways as well. [ST Edge] Philips Hue LAN [BETA] (3rd Party Driver, Not ST Native) Not using the Bridge can mess up your zigbee network the most important really is …

And if you are using the hue bridge, assuming you can get an account set up, you should at least be able to use the free IFTTT service for some Hue integration.

Philips Hue Integrations - Connect Your Apps with IFTTT

I don’t think you’ll be able to get the harmony to work directly for the same reason you can’t get the hue bridge to work: you are region locked as long as your location is in New Zealand. But again, you can use IFTTT for some integration:

IFTTT / 500 Error

But if all you want are zigbee devices, have you considered using the echo plus or echo show (second generation) as a home hub instead? Uses the same home automation profile for zigbee that smartthings does, and they are adding more features all the time.