We recommend you to Route your Domains through Cloudflare.com Account which is free and will handle your SSL certificates for free.
Step 1) Create a free cloudflare.com account if not exist .
Step 2) Login to your Cloudflare account and Add your Domain to Cloudflare.
Step 3) Update Cloudflare DNS Nameservers at your Domain Registrar's Website
Step 4)Add all your Panel DNS Entries in CLoudflare. and make sre that the connection is 'Proxied'
Step 5) Activate 'Always HTTPS' settings
Refer the below video for Detailed Demonstrations