Hello. The text “One response” is not translatable.

(This post was written by @heikkiwaan )

it can be found from the elementor “Post comments” -widgetWidget A WordPress Widget is a small block that performs a specific function. You can add these widgets in sidebars also known as widget-ready areas on your web page. WordPress widgets were originally created to provide a simple and easy-to-use way of giving design and structure control of the WordPress theme to the user..
sample: https://matkassa.moikka.fi/teneriffa/
at the bottom of the page.