Maybe that element is dynamically changed on page load,
depending on many factors.
You should examine source code of the given web page and
find - determine best solution for your case.
Experiment with other selectors provided by BAS, besides
CSS selector, or find your own constant selectors based
on web page source code
Here you can learn more about selectors >
https://wiki.bablosoft.com/doku.php?id=how_to_search_for_element