Woocommerce custom theme – image zoom problem

Hi all!

Im new on the site.
I have a problem in deveoping my own wordpress theme.
I have installed wordpress plugin called Woocommerce image zoom.
The hover zoom function not working.
In other theme its good.
Its an only install and use plugin, but i think in my theme i must make some changes or must add some javascript code?
I use jquery, bootstrap js and own js file with little codes.
Can someone help me what can i do? Where can i start?

The second question is how can i change the single product page layout without plugin?
I want to insert the bootstrap column classes.
I want to display the image on the left column and the other (properties, order button and etc. on the right column).
How can i do this?

Thanks
Andrew