Every domain and subdomain on our hosting gets a free SSL certificate from Let's Encrypt. With it your site runs on https:// and browsers show the padlock.
The certificate is issued automatically once the domain points to our server (uses ns1.boost.pl and ns2.boost.pl, or has an A record with the server's address). It is also renewed automatically before it expires - nothing to remember.
Check your certificates in DirectAdmin: Account Manager → SSL/TLS Certificates.

If a certificate will not issue, the reason is almost always a domain that does not point to our server yet. Check the domain's nameservers and wait for the change to spread (up to 24 hours).
Need an organisation-validated certificate (OV/EV)? Open a ticket - we will help you order and install it.