I want more than 5 devices on my 360 license

I am stuck in a loop on the web site.

I already have a 5 device Norton 360 III license.  I wish to add 2 more devices.

I cannot find any Australian 10 device license.  If I try to buy an additional 3 device license it just takes me to a page to manage my existing license (where it will allow me to upgrade to Ultimate or renew.  I cannot find a way to buy another license or upgrade the number of devices.

If I try the support robot Kate I just get told how to install on multiple devices or passed to another support page.

How do I add either (a) more devices to an existing license or (b) buy an additional license?

FWIW!! There is a 3 device subscription available in AU at this link, 2 devices aren't available, it jumps to 3 devices from a single device, then to 5 devices accordingly:

https://au.norton.com/products/norton-360

**Click on the "subscribe now" radio button and you should be presented with the following:

https://buy.norton.com/estore/checkOutV2/CartV3/true

SA

You need to purchase a new subscription which allows for 10 licenses. You cannot add additional licenses to your current subscription and you cannot add an additional device to a single license.