Some customers reported to us a little conflict with DIVI theme that affects the services categories of the front-end booking form.
We’ve found a simple trick to fix this issue.
Inside your child theme you should call this script inside your footer usually inside the footer.php file :
In case this solution doesn’t fit your case please send us an email to email@example.com
If your case is that the Date/Time picker of the booking form is not opening up then you could add this script inside your theme footer.