FlexSlider with pages, not posts

Hi, I used to use FlexSlider with pages instead of posts. I found a workaround to achieve it. I added a category to the pages via Add Categories to Pages. plugin. So I was able to choose this category in Sparkling options. It used to work out of the box. Nevertheless, it’s no longer valid. Something has changed so it doesn’t work. Do you have any idea how to restore the functionality? My page is www.ospgostyn.hekko24.pl

Hey there

Im so sorry to say but no, I can’t say why it stopped working, it’s hard to guess, please note, conflicts or problems when the theme is not fully working with third-party plugins are not always supported