Stripe custom payment form error

We have a custom payment form setup with stripe.  The drop down in the CC info box allows you to select months and years for expiration.  When submitted the error to submit a month in numerical format comes back.  The drop down selection is text.  The field is not editiable.  How do we fix this and allow custom payment amounts on this form via CC.

Z

I checked your form on its standalone version and couldn't replicate the same issue as the embedded form, which means there's possibly a script conflict with the embedding. Can you please remove your current embedding and use the iFrame method to add your form to your page? As that will resolve any script conflict. 

Here's how to get the iFrame code:

Getting-the-form-iFrame-code