[Закрытые] Disable some automatic translation

The page has Woocommerce and Bricks bulder theme. Original is slovenian, then we have english, german and dutch.
I started translating with automatic translation and with advanced editor, but then the client wanted to manualy change some translations. We figured it would be easier for them to just translate in wordpress editor. Now when they change some translations in wordpress, after a while their translation disappears and original (slovenian) language is displayed on german site. They say they edited a product in german three times and after a while it turns again to slovenian.
Do you have an idea what is happening?