Hi Ricardo, glad you like Content Scheduler.
For the next release of the plugin, I will address:
a. Consistent string handling (so the plugin can properly be translated)
b. Ensuring it works in WP Multisite installs (unrelated to your question, but just saying…)
Once this version is ready, perhaps you would have time to help translate it into Spanish? I can point you to the right resources for how to do it.
Take care,
Paul