Calendar Pop Up/Date Picker

I am having the same problem. I note that in the list of features the date picker says “uses jQuery UI Date Picker.” Does this need to be installed separately via a different plugin? I have searched for it but have not found it.

It is likely you are having a jquery conflict. You might check to see if you have a conflict with another theme or plugin or you may be running an outdated version of jquery. This can be fixed by using a plugin that keeps your version current or by making sure your site is up to date.