doesn’t works

Hi,

today I bought the pro version of Date Time Picker for Contact Form 7
plugin for WP.

But doesn’t works. The Console of Chrome shows this error:

Uncaught TypeError: $(…).off is not a function
at init.$.fn.datetimepicker (jquery.datetimepicke…l.js?ver=5.7.2:2899)
at HTMLInputElement.<anonymous> (datetimepicker.js?ver=5.7.2:186)
at Function.each (jquery-1.6.4.min.js?ver=1.6.4:2)
at init.each (jquery-1.6.4.min.js?ver=1.6.4:2)
at HTMLDocument.<anonymous> (datetimepicker.js?ver=5.7.2:166)
at Object.resolveWith (jquery-1.6.4.min.js?ver=1.6.4:2)
at Function.ready (jquery-1.6.4.min.js?ver=1.6.4:2)
at HTMLDocument.C (jquery-1.6.4.min.js?ver=1.6.4:2)

$.fn.datetimepicker@jquery.datetimepicke…l.js?ver=5.7.2:2899
(anonymous)@datetimepicker.js?ver=5.7.2:186
each@jquery-1.6.4.min.js?ver=1.6.4:2
each@jquery-1.6.4.min.js?ver=1.6.4:2
(anonymous)@datetimepicker.js?ver=5.7.2:166
resolveWith@jquery-1.6.4.min.js?ver=1.6.4:2
ready@jquery-1.6.4.min.js?ver=1.6.4:2
C@jquery-1.6.4.min.js?ver=1.6.4:2

Shortcode: [text* book-date class:walcf7-datepicker placeholder “Date Picker”]

Could you help me please.

Thanks.

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