Exceptions Prices not working

Hello everyone
i have a problem with the exceptions.
By setting a special price for a period this is not applied to the rooms.

I have read this thread

https://wordpress.org/support/topic/exceptions-not-working-3/

and as suggested i tried to change the date format to m / d / Y, but nothing is not working.

While setting a block exception this only works with the date in m / d / Y format.

I use the latest version of the 3.3 plugin with WordPress 6.0.2.

I hope for your suggestion
Thank you
Max