From 30 November 2020 we will no longer support XML as part of the Servertastic API.
There are no other changes to the API that affect the ability to place and manage orders. However responses from the API will be JSON only after 30 November 2020.
If you are using the XML responses and wish to switch to JSON prior to 30 November 2020 simply add .json to the end of the API call.
We have created updated documentation and published this on a new developer website at https://dev.servertastic.com