Hi @SanchezCSG,
What didn't work exactly? Looking at your screenshots, your Recurrence (Periodicidad) is set to start every day. If you want to start only on the 24th of every month, you should change the Frequency (Frecuencia) to Month (Mes); your Time zone and Start time are fine.
As for the Delay until (Retraso hasta), you are using AddHours() instead of AddDays(). Also, when you build the expression with the AddDays() function, it's better to use the Expression tab in the Dynamoc content area to build the expression.
In my examples below, I used 2 Delay until (Retraso hasta) steps: one for the first 5 days and for the other 5 days. Please let me know if you have any questions.
addDays(body('Create_item')?['Created'],5)
addDays(body('Create_item')?['Created'],10)
Regards,
Fausto Capellan, Jr