Welcome to the community,
Could you please send me a PM (private message) with your Full Name, CID (customer identication number) and your mobile phone number, so I can take a look at your service?
I have checked your service it all looks fine, and your sync rate is 13Mbps/2Mbps. This is good for an NBN12 plan.
Your service has not dropped the connection for 1 week 16h 26m, so your service is stable.
First thing I recommend you do before anything else is reboot your modem/router. Give it about 3-4 minutes to power up and retest the service.
If you are still having issues and you are connecting via Wi-Fi, I recommend you have a read of the following community article.