Hi @josenobre,
Okay - thanks for clarifying. Is it that you are trying to publish a particular issue, or a specific article (I couldn’t tell from your initial post)? You may want to have a look at these posts here: Publishing Error - Need Help - #6 by mazen.abbas and Cannot schedule for publication, "You don't currently have access to that stage of the workflow.", where they have encountered this issue and have found a resolution.
-Roger
PKP Team