Ip instead of name at godaddy?

Question

Django

Hello, I have vps ubuntu django-nginx-gunicorn and godaddy domain,
I attached it somehow like this (sorry, with a picture, if there is a better way to do it - write)

Django allowed hosts contains both domain and IP address and 127.0 .0.1 , in gunicorn bind 0:8000, in nginx config the domain name of the site.
In general, the problem is that if you connect to the domain from a computer, it opens the site, but immediately shows the ip address in the address bar, but if you open it from the phone, then everything is fine, I did not do the test on other computers, but I did the test from the mobile Internet on the phone and wi-fi on the phone and there the domain name does not change to the ip address, what's the problem here?