HTTPS and install domain
Match license domain to live URL.
Force HTTPS
Install Let's Encrypt or host SSL, then redirect HTTP to HTTPS in .htaccess or panel. License validation uses the domain you enter, not the protocol.
www vs apex
Pick one canonical host. If license is myte.com, redirect www.myte.com to apex consistently.
Mixed content
After SSL, update site URL in admin settings so surf bar and assets load over HTTPS.