@robolink_leila , @rdmueller
Thank you for your help! I checked my laptop Internet connection, but my laptop doesn't have any wired connection and ethernet cable connection. When I connected to Zumi via wi-fi, Zumi said " You Found Me". After that, when I entered 'zumidashboard.ai' in Chrome, it was the same display, but when I changed to Edge, I was able to go to the page "Hi, I'm Zumi 1234". Internet Explorer did not work as well as Chrome.
Anyway, my problem seems to be solved. Thank you very much.