Translation string missing – single hotel page

Hi,

I´ve used Loco Translation to translate my site and have gone through all themes and plugins, but there is still (at least) one string I cannot find anywhere, I even tried to go through .php-files to see if it hardcoded, but with no success.
The string is “Those dates are not available” on single hotel pages, where the text replaces the “Book Now” -button if no available dates are found (right column).

Here´s an image of the page with the string highlighted with red outline:

If you need to access my test site the credentials you have from my earlier ticket are still valid – or you can ask for new ones. However, this can be repeated with any installation of the theme you may have at your disposal.