Hi Tina,
Please exclude your MyStyle Customizer pages from SSL so that it’s normal https:// not https:// for it to work properly.
If SSL is absolutely required, you can get a custom development to set you up with a dedicated SSL route, but this will be much more expensive in the long run than just excluding your /customize/ app page from SSL and SEO with standard best practices. We typically only do this for Enterprise level clients.
A developer should be able to accomplish either .htaccess or PHP-based SSL/non-SSL 301 redirection for you in less than 1 day, but this is beyond our Developer License support.
Thanks,
– Sean