Hass.io not in sidebar

Installation
1

Hi, I recently installed hassbian but there is no hass.io in sidebar

2

Hassbian is not hassio - it is a HA version of Raspbian and will not have the hassio sidebar. You will need to reflash your SD card with hassio instead. Follow the guide here

3

thanks for the reply. But I have a question first. If hassio is not installed on hassbian then why hassbian provided?
And that I installed hassio and I found another problem, and the problem is that port 8123 seems to be closed. But ip has been assigned from dhcp to hassio and has ping.
What should I do now this strange situation?

Thankful