Now I am without internet.

It has failing Wi-Fi second channel some time ago in the beginning of the year.

And today I have checked the VPN and it did not worked. Checked the dashboard and found out, that USB drive did not mount.

Have tried to mount it by hand, but even could not get USB core driver to work.

After reboot the PPPoE internet connection also failed.

So I suspect either router processor has issue or the power supply.