Hi @ylia095 ,
We're sad to know that you're having issues with the service. We did an article that you may find helpful, this will guide you on how to perform basic troubleshooting on how to fix this issue, please see link below.
In the event that issue still persist, send me your account details (Username/Customer ID) together with the address on file for further test and investigation. Here is how,
How do I private message (PM) in the community
Hi The internet is down from 9pm. The lights on the NBN Box are flashing. Please help.