Thank you for purchasing our product! Regarding your issue, have your tried adding Australian Auskey program to the exception list yet? if you haven't, please check out this article for step by step directions on how to add programs on exception list: Configuring the Exception List of Trend Micro Security software - refer to "Add programs or folders"
After adding Australian Auskey program on the exception list, if you're still seeing the blocking message, please provide a description or picture of the message, we'll be glad to assist you. Thanks.