Font type in posts

Hello, I’m not sure if I’m missing something… I just upgraded to Kale pro, and I can customize the font types from headers, menu, body… but they won’t change their type in the posts I have made. In the main page i can see the changes, but when I open an article, I’m unable to change the paragraph font style (it keeps the same it was in the classic editor in WordPress page).
What am I doing wrong? I’m turning crazy! xD