Ninja Forms Date picker stopped working 3.6.14

Existing form that used to work for years suddenly Date picker stopped working and no errors in the console. I’ve tried all the available formats including “Standard” and tested in latest Chrome, Opera and Firefox browsers with the same result. LiteSpeed Cache is disabled. I’ve also tried to roll back the Ninja Forms plugin up to 3.6.7 but no avail.
Here is a screenshot of the form settings in wp admin https://imgur.com/tG3xYI6
Any help would be appreciated.

Ninja forms: 3.6.14
WP: 6.02
Envo Magazine: 1.3.12

The page I need help with: [log in to see the link]

 

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