Overview of the Issue
When you update WP Store Locator from version 2.x to 3.x on a multilingual site, the store locator labels show in the default language on the pages of your other languages.
WP Store Locator 3.0 moves the labels from SettingsLabels to a new place, but it does not move their translations. Your translations stay with the old 2.x labels, and the new labels have none.
This happens once, during the update. Sites that start with WP Store Locator 3.x are not affected.
Workaround
Translate the labels again:
- Go to WPMLString Translation.
- In Select strings within domain, choose the admin_texts_wpsl_labels domain.
- Translate each label into your languages. Your old translations are still in the admin_texts_wpsl_settings domain, so you can copy them from there.
- Visit your store locator page in each language, and check that the labels show the language of the page.