Publish button doesn't show shinyapp.io option

Hi you all.
I have sign in im my account on shinyapp.io connect thru RStudio, followed the instructions to copy info from Token, etc, etc.
It appears that I'm connected but when I'll publish some file/app/rmarkdown the shinyapp.io option is not showed.
After click Publish button it only appears the RStudio Connect option.
For a while I'm using an RMarkdown file with flexdashboard with runtime: shiny
Is there any problem with that?
Thank you.