cannot click payment button

Uncaught TypeError: i.valid is not a function
at Object.submitPayment (public.min.js?ver=2.0.8:6)

Trying for last two days, no luck. Please help. Pay Now button is showing up, but it is not triggering the payment overlayer signup form.

P.S. I am not a jQuery expert, I don’t know if theme jQueries are conflicting with this.

Regards,
J.

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