SSL Issue

The sslshopper.com service verified my certificate for the site golds.pp.ua
|### golds.pp.ua becomes 185.27.134.93|
||### Server type: nginx|
||### No SSL certificates were found on golds.pp.ua. Make sure the name matches the correct server and the SSL port (default is 443) is open on your server’s firewall.|
Why is the certificate not installed? I did all the steps correctly and waited for the certificate to be installed for a whole day, but it still didn’t install.