Welcome to the community!
We are sad to learn that you're having issues with the connection, @Sina1394.
I would love to help and get to the bottom of this, to better understand what causing problem with the service, send me a Private Message with your account details (Username/Customer ID together with the address on file).
There has been no NBN internet connection since a few days
Hsve checked and no outage at my area.
I've been doing all these checking procedure - turning the router on/off, resetting the router, turning on/off the NBN box, resetting the NBN box,
plugging/unplugging the cables, swapping phone connection but Nothing worked.
The green light or not working as well on the rotor only the power and WLAN are green the rest not working
Please respond ASAP