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I took a look at your form: http://form.jotform.us/form/51817925822158 (which was being linked to from your website)
Now, looking at it, it seems to ask to connect to Stripe when opening the wizard, so what I would suggest is to use that big blue button and create the connection through it - this will capture the right keys for you after which it should work - as long as your Stripe account is set to live and accepting payments.
Do however let us know how it goes and we will help you set it all up.