Configuration problem in SSL using Nginx

I am trying to install a free SSL certificate using Nginx I have followed the steps on: [login to view URL] I have no modified the Nginx default configuration other than changed the server name according to STEP 2 from the above instructions, using the main domain and the www version. The rest remains as in: [login to view URL] The certificate is for a subdoain: [login to view URL] Hosting is by Digital Ocean So in STEP5 I successfully obtained certificate for the subdomain I also applied it for the domain However, when I try to access subdomain it says: ____________ Welcome to nginx! If you see this page, the nginx web server is successfully installed and working. Further configuration is required. For online documentation and support please refer to nginx.org. Commercial support is available at nginx.com. Thank you for using nginx. ____________ In the droplet I have an app developed with Vue.js installed on an Ubuntu 16 I need someone with experience in Nginx to solve this configuration problem and make it work again.