Multilingual shop page

I have this theme, and want my site to be in 2 languages, serbian and english.
The way woocommerce usually works is that shortcode is added to the page, [woocommerce_shop] and then when you switch the language, wocommerce automatically translates to chosen language.
I notice this theme has no shortcode, the ‘shop’ page is blank (has no text, no shortcode). This works fine for the main language, which is serbian in my case. I use polylang free for creating pages in 2 languages, but I don’t know what to do for shop to display the english version.
When i click little ‘+’ icon for adding translation of the shop page, i just leave it blank, but instead of showing products from base, it just says “No products were found matching your selection.”