Hi, derekwongmi
I directly fix your issue few days ago. It is actually a weird issue. In Menu > More Programs > Blog Layout setting, normally number of leading articles set default equal 0 and type hidden but in your case is set to 1 so the latest article will not be displayed.
If this issue still happen, you are able to show this field: # Leading Articles and change the config = 0 by replace this file templates/ja_blockk/html/com_content/category/news.xml
You kindly check and response to us.
Regards,