Domain's IP address was changed (How to switch an IP address for a domain in Plesk)
Domain shows Web Server Default page
If the new IP and domain name are added to the local system's "hosts" file, correct content is displayed
Domain resolves to the old IP address globally:
C:\> nslookup example.com 188.8.131.52
# host example.com 184.108.40.206
Using domain server:
example.com has address 203.0.113.2
Domain resolves to the old IP address globally due to the DNS caching.
Wait until the new values are propagated globally. It might take up to 48 hours.