Hello m,
All of the static labels/strings that appear on the front end of this plugin are localized in the code. This means they are ready to be translated and can be found and identified as such by translation plugins.
Additionally, both the products and catalogs are created using custom post types. This means they are translatable in the same way you would translate your regular pages and posts (i.e. any translation plugin that can translate pages should let you translate products and catalogs as well). You may just need to first enable our post types in your translation plugin’s settings.
More information can be found on our documentation page: https://doc.etoilewebdesign.com/plugins/ultimate-product-catalog/user/labelling/translating
It has not been specifically tested with ACF. However, as mentioned, the products are made with a post type. What are you looking to do with ACF?
