Get online support
Hi tonnapat,
We recommend the best thing to do first is to check if there's an outage.
Check our Service Status page for any known outages. If you're on NBN, we have created this article that can guide you on How to Check for NBN Network Outage.
Otherwise, let us have your Customer ID or username via private message so we can have our Tech team to assist you further.
Thanks!
Ahra_G