Setup for automatic news posting

Hello! I am new to the WordPress environment and I’m currently having trouble using this plugin. My requirement is quite basic — I just want to fetch and publish news posts from a few specific categories. Could you please help me set up the plugin properly? I tried following some YouTube tutorials, but the posts are not being fetched correctly. Only the title or a small portion of the content is being imported. I would really appreciate any guidance to help me get this set up and running properly. Thank you!