Data not yet available when running function

I have a styled countdown that is dependant on jquery. I load my end dates into input fields which I will eventually hide.

The function grabs the values here and starts up 3 instances of the countdown for my three cards that must display them

The input code looks like this:

onchange shows nothing, so I went with onupdated

In Wappler Design view it works and the countdown starts, but when testing in the browser no luck.

Help appreciated.

Link to page:

https://askbob.co.za/countdown.php

Everything is at the bottom before the footer

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