Hello, dhagan

Can you please confirm if you have successfully issued the Let’s Encrypt SSL Certificate?

If the SSL is issued you need to update/upload the files on the external server in order to renew the SSL Certificate.

You can check the following lines in your nginx.conf file and make sure that these files contain the new SSL Certificate files:

  ssl_certificate /path/to/your/fullchain.pem;
  ssl_certificate_key /path/to/your/privatekey.pem

Hope this helps.

Alex