Hi There,
Can you please share the website URL so that we can check?
Until then, I suggest you to check the following cases:
1) Check theme compatibility: Ensure that the theme you are using is fully compatible with the Elementor plugin. Some themes might have conflicts or limitations that prevent the display of certain features. Try switching to a default WordPress theme (like Twenty Twenty-One) temporarily and see if the issue persists.
2) Plugin conflicts: Deactivate other plugins one by one (except Elementor and its add-ons) to check if there are any conflicts causing the widget to not display on the front end.