For customers experiencing any issues with their NBN service, we recommend the best thing to do first is check if there's an outage on the NBN network.
We have created this article that can guide you on How to Check for NBN Network Outage.
If there are no known outages in your area, customers can proceed with the troubleshooting steps indicated on this link : https://www.tpg.com.au/support/nbn-hfc-cable/problems_connect_internet_nbn_hfc
In your case, your service was affected by an NBN network outage which was caused by a misaligned amplifier and a fault Radio Frequency (RF) module. The attending NBN technician restored the services by realigning the amplifier and replaced the RF module.
Your service shows that it has been stable and working within specification.
If you need further assistance, please let us know.