Some category-related widgets don’t function properly!

Hi all,

I use Pixwell theme + elementor free version to build my site on a local host. When adding widgets to the home page, everything looks fine with the elementor editor, but whenever I check it on the preview, those widgets are there but without the content. I use widgets that categorize posts depending on their categories. The elementor editor shows the posts as they should be, but on the preview/live site, the widgets appear but without any posts with the message 'No posts found. Please add more posts for this query.'

I tried clearing cache in both the browser and with the caching plugin (WP Fastest Cache). Even clearing Elementor cache didn't help!

Your comments on this issue is highly appreciated. Thanks all!