Step 1: Log into SSH.
Step 2: Install Really Simple SSL using the command:
wp plugin install really-simple-ssl –activate
Step 3: Type wp rsssl activate_ssl. Once complete, you should see:
Success: SSL activated
Step 4: Clear your browser cache or start a private browsing session. Visit your website without HTTPS. It should redirect to HTTPS.
Step 5: Configure your website to ensure FreeSSL updates with Really Simple SSL enabled (if applicable).