For customers who would like to check the status of their service installation/activation, we have created this community article, which contains a video on How to track your TPG service installation
In your case, the NBN technician wasn't able to attend the job due to adverse weather and the appointment requires to be rescheduled. The new schedule has been booked and the details were sent via Email. Your attendance is required or someone over the age of 18 is available during the installation appointment.
Your case manager will be in touch with you via SMS/Email or phone call once an update becomes available.