feed items show up incorrectly

[Nurse Nana]

I was checking my rss feed on multiple feed readers to assess the appearance. When viewing on the Feedly reader, everything appears, even posts that have been checked to be hidden in feed. When checking on the Newsify reader, nothing shows up. In my Google feedburner account, I have activated the "Smart feed" option to make my feed compatible with any feed reader application. What might the problem be????