Heureka.sk implementation to our shopify site

[rv3]

Hi! Anyone had success to implement the Slovakian price comparison site heureka.sk or heureka.cz? We need to implement the code to our site but didn't find any information how to do it. The XML feed is uploaded already but we need to make the "overené zákazníkmi" part to make it work for us, we got a link https://www.heureka.sk/direct/dotaznik/objednavka.php?id=xxx&email=meno@email.sk&itemId[]=206210&ord... but we don't know how to insert it to our code to make it work or where to insert it or anything related to this... thank you in advance.