Never do this before. What kind of file system format your HDD is? Did you do some authenticated settings with your HDD or in the router?

Hi , please try to change the MTU size to 1300, the default is 1480. In Advanced - Network - Internet - PPPoE Advanced to change. If the problem still exists, try to use MAC clone function, clone...

The previous firmware version is 150427 ? It's a UN version which is out of life and you could upgrade to EU/US. But between EU and US, you couldn't upgrade to each other. There is no negative...

In Host setting, you could also choose MAC address of your children's PC. In Target , 0.0.0.0-0.0.0.0 means you block Internet connection totally and it's no need to change even if you choose MAC...

Hi there , would you please try to clean up the cache of your browser? Or try another web browser?

Hi, maybe it's little complex to setup Access Control. Let me show you. In Access Control - Host, click Add New, then select IP address mode, input your children's IP address, description is random....