Display products in 2 column

Please post the url to your site.

https://www.viktorjezek.cz

Your theme is twenty-fourteen, not twenty-fifteen. Its possible to get twenty-fourteen to work with WooCommerce but it may take some work.

Before doing that, consider trying the virtue theme (free version):
https://www.ads-software.com/themes/virtue/
This is a popular and well-supported theme which is already WooCommerce friendly.

Hello Viktor, you can try pasting this code in your functions.php:

add_filter( 'loop_shop_columns', 'wa_loop_shop_columns', 1, 10 );

function wa_loop_shop_columns( $number_columns ) {
return 2;
}

It is best that you add this in your child theme. You may refer to this link on creating a child theme

Hello wooassist,
thank you for your reply. The code that you sent me works, but it solved my problem with rozhozenymi elements (see https://ctrlv.cz/60Lu). Any idea to solve? Sorry for my English.

I’m sorry I didn’t get this … https://ctrlv.cz/60Lu. What exactly is the concern again? Appreciate if you can be more specific please, thanks.