Cannot Delete Submission To Make Dates Available

Hi there i am using the reservation widget and up until a month ago it was working great for bookings and deleting reservations. However now for some reason i cannot delete the dates and make them available in the calendar?
Please help

Hello,

Thank you for contacting us!

To Free up the dates that were previously selected on submission you would need to permanently delete the submission made that has selected the dates on the Date Reservation widget. Once you permanently delete the submissions the dates would be then available to be picked on the Date Reservation widget.

Are you getting any error messages when you try to delete the submission associated with the dates? Can you provide us with more information on why you cannot delete the submission when following the guide?

Looking forward to your reply.