Hey Mcnutts,
Welcome to Crowd Support 
I'm sorry to hear that there have been issues with the Apple devices to connect to this WiFi service and do apologise for any inconvenience that this does cause. Are you able to try the following troubleshooting steps for the WiFi connection at:
https://crowdsupport.telstra.com.au/t5/General-Internet-KB/How-To-Troubleshoot-WiFi/ta-p/107516
Please do let us know if any of these do assist?