Charge/Stripe and "Missing required param: exp_month."
I got this resolved by official support.

When using the combined date input you'll need to include the exp_month and exp_year inputs as hidden fields in the form. 


And here's the working hidden fields:

  &lt;input type="hidden" name="cardExpMonth" value="" data-stripe="exp_month"&gt;
  &lt;input type="hidden" name="cardExpYear" value=""data-stripe="exp_year"&gt;