While this is unlikely related to payment module issues, you're still triggering "page is insecure" errors because you have two occurrences of HTTP:// URLs in your stylesheet.css file:

background-image:url('http://misasfashioncafe.com/includes/templates/MFC/images/white_texture.jpg');

Changing it to this might work better:
background-image:url(../images/white_texture.jpg);