When i select diferent colors variations the main picture always is the same
I have checked on your site and it worked properly.
Will you please recheck and let me know if you still have the problem?
No, if you select just the color without size
I am sorry for the inconvenience but it is a premium feature.
This is how it works: https://www.youtube.com/watch?v=31WR96-9kuQ
If you have further queries, please let me know.