Use incorrect ssl certificate when browsing with www domain

Dear Sir/Madam, My server is setup as wildfly14 and nginx as the backend, and when browse it with [login to view URL], it is using the correct ssl certificate, however when I browsed it with [login to view URL], it said that it is using another certificate that is correcntly also hosting on my wildfly and nginx server. here is the error from the browser: This server could not prove that it is [login to view URL]; its security certificate is from iextentco.com. This may be caused by a misconfiguration or an attacker intercepting your connection. Here is my nginx configuration file: server { listen 80; rewrite ^(.*) https://$host$1 permanent; } server { listen *:443; server_name [login to view URL] *.[login to view URL]; # edit this to your domain # SSL config ssl on; #ssl_certificate /root/ssl/morfeusflex/[login to view URL]; ## bundle cert contains 3 certificates (eg. cat [login to view URL] morfeusflex.com.au.ca-bundle >> [login to view URL]) ssl_certificate /root/ssl/morfeusflex-2018-June/[login to view URL]; ssl_certificate_key /root/ssl/morfeusflex-2018-June/[login to view URL]; location / { proxy_pass [login to view URL]; # set to your own port proxy_redirect [login to view URL] [login to view URL]; # HTTP 1.1 support proxy_http_version 1.1; proxy_buffering off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Host $host; client_max_body_size 10m; client_body_buffer_size 128k; proxy_read_timeout 3500; proxy_connect_timeout 3250;