Hi, sorry for the inconvinience.
Could you post your product page url here, so that we can a look at it.
Otherwise just let us know if you see any console error on your browser.
This could be done in two steps, Under Disable Days section
1. Choose Disable Past Dates
from Past or Future
2. Specify number of next days to diable from Disable Next X Days
I have disabled both Past Dates and Next X Days. It works previously but suddenly not working.
/wp-content/uploads/otwbm/skins/custom.css?ver=4.9.9:1 Failed to load resource: the server responded with a status of 404 ()
jquery-migrate.min.js?ver=1.4.1:2 JQMIGRATE: Migrate is installed, version 1.4.1
AnimOnScroll.js?ver=4.9.9:89 Uncaught TypeError: Cannot read property ‘id’ of null
at AnimOnScroll._init (AnimOnScroll.js?ver=4.9.9:89)
at new AnimOnScroll (AnimOnScroll.js?ver=4.9.9:75)
at main.js?ver=4.9.9:1
24jquery-ui-timepicker-addon.js?ver=4.9.9:1911 Error parsing the date string: Missing number at position 0
date string = +2d
date format = dd-mm-yy
custom.css:1 Failed to load resource: the server responded with a status of 404 ()