WP Maps supports multiple languages to create your product locator into more than a single language, English en_US is the default language of the product locator, and can't be removed from the language list, to create your second or more languages, go to Configuration > Languages tab.

Figure 1: Configuration – Languages

Once you have a language, you will be able to switch to that new language, through the language switcher in the WP Maps header section (please refresh the page to make it appear).

Figure 2: Configuration – Language switcher in the header section