Zip Money orders on instalments can be viewed by tapping on the Instalments section from the 'Upcoming repayments' tab on your Zip Money account , this will open the list of orders on Instalments, clicking into an order will then open the instalment plan for that order:
Here you will be able to see all instalment repayments that have been made successfully as well as all your upcoming repayments.
You can also select to opt out of instalments for that specific order from this page, see the article here.