@alexssdb,
Este foro es en inglés por lo que pedimos realizar las preguntas siempre en inglés.
This feature works like any other cron task in WordPress. When you schedule it, it will take the hour in which this is executed.
If you want any improvement about it, please tell us and we will give you a quote to include it into the plugin.
Thank you.
Ok, if I have misunderstood you, just at the time you activate the check “Activate periodical import?” and click on Save, WordPress will execute the cron at that time periodically.
Yes, this is the time when the event is scheduled.
Please remember to give us a little donation or a good review to help us to improve and work on this plugin (and also answer free all the questions you have here).