I had an issue logging in via the web gui after my unit was hacked.

If you wanna reset your miner to default settings & password, then open the Avalon remote app and remote the miner.

Disconnect the miner.

Then power it back on and press the FUNC function key (before the indicator flashes red), for five seconds until the white light flashes to indicate success. Then press RESET or disconnect the power to restart. Then add back all of the network credentials via the app, then connect to the web gui.

You might need to a couple of factory resets for the login credentials to revert back too root/root