SAWF-07P DND Schedules

Hi,

I have Sonoff SAWF-07P.
I tested the DND function for sound alert.
It seems that it was an uninspired choice because once a DND schedule is created, it cannot be deleted.
The DND schedule works correctly, at the scheduled start time, the sound alert is automatically deactivated.
The problem occurs when the scheduled DND period ends, because the sound alert function should be reactivated automatically.
Unfortunately, this does NOT happen!
This is a problem.
Specifically, if I have a DND schedule for the period 23:00 - 06:00, it would be logical that at 23:00 the sound alert should be deactivated, and after 06:00, at the end of the DND period, the sound alert should be reactivated automatically.
Unfortunately, once the sound alert is deactivated, it remains permanently deactivated!
If I manually reactivate the sound alert from the button on the SAWF-07P, this will have the effect of activating the function but will also activate the existing schedules that cannot be deleted and unfortunately cannot be modified so that they are valid only once!
So the problem is that once a DND schedule is set, it has the effect of stopping the sound alert every time the scheduled day and time is reached, without the sound alert automatically reactivating at the end of the scheduled period, restarting being possible only manually from the application or from the button on the SAWF-07P and this cycle is repeated endlessly. So if you make the mistake of setting a DND schedule YOU WILL NO LONGER BE ABLE TO USE SAWF-07P WITH SOUND ALERT PERMANENTLY ACTIVATED!!!
I would be interested in how to delete a DND schedule and I am interested in how I can reactivate the sound alert automatically after a scheduled DND period?

Thank you.