Hi Waldemar,
The code is translating the Search Address and Search By Address in the widget. We have full Brazilian Portuguese translation and the two values are translating.
So its not a code issue but the translation file that was provided may have only been partially translated is my guess.
e.g. Widget Image https://ibb.co/s5MRRj0
Polish is 1/2 translated:
https://translate.wordpress.org/locale/pl/default/wp-plugins/easy-property-listings/
So it should translate as its not a code problem.