DON'T USE INTERNET EXPLORER with Hass IO, try Google Chrome

[TremulousTetra (Mark Swindells)]

If you want a complete explanation as to why, have a look at my tribulations here.

Hassio new installation asking for username and password

Open your configuration.yaml file and look for api_password: Whatever is written in front of it is you password.

However, it suffices to say that Hass IO will NOT work with Internet Explorer

Any advice appreciated, Tremulous Tetra.