Tracking domain - http and not https

After setting up my tracking domain, I am not getting https in the links in the email. While for my parent domain the links in the email contain https.

I have setup the redirection using CNAME for tracking domain and if I manually add https:// to my tracking domain URL then the mailwizz comes up. But the links in email also need to contain https:// else site does not show up.

What would I need to do ?