How to translate the plugin?
If you want to translate the admin area of the plugin, frontend text or change the country names in the country dropdown switcher you will need to translate the .po files within the plugin. The files are included in the languages folder and you could use software like Poedit or a plugin such as Loco translate.
Once you saved the files you need to rename them using your locale, so for example the fille could be name geot-de_DE.po and the compiled version geot-de_DE.mo. You need to place both files in the languages folder.
Also you can send those files to support so we can include them on the next version of the plugin or if the translation it's related just to your site you could add the following code in your theme's functions.php and save your .po and .mo file in wp-content/languages/plugins/ folder: