Hi Again
Please read below, as it’s very difficult to know what you have and have done etc. , you need to provide more info, or it would just end up in a guessing contest here 
How to help us help you - or How to ask a good question.
i.e,
have you tried to access from different Devices ?
have you tried to access from different Browsers ?
Are you using http Or https ?
Is your Green connected to wifi or ethernet cable ?
do you try to access it over wifi or ethernet ( or tried both ) ?
I Assume you have already rebooted the Green( unplugged it and plugged it in again )
Do you have a keyboard and a monitor you can connect direct to your Green ?
Above is just , for a start ! , As it’s impossible to guess anything, we need to see i.e the “HA Console” ( It’s available if you attach a monitor to Green )
Also from there it’s possible to see basic settings etc, and even see i.e log-files
Beside it could also be important to know/see what “messages” you get, when you try to connect to the Green, from different devices and browsers