Zen Cart version: 1.5.5f
Plugin version: 0.91
Template used: Fidelity

When I try to go through the checkout process, on Step 2, Payment Information, I receive the following error:
"We could not initiate your transaction because of a problem with the card data you entered. Please correct the card data, or report this error to the Store Owner: SQ-NONCE-FAILURE"

I've been through the FAQ which suggests
"The module expects the checkout page to have a <form> element with a name='checkout_payment' in it."

I've checked the HTML and there is a form that has the name "checkout_payment."

It also suggets making sure that jscript_framework.php has been copied to /includes/templates/YOUR_TEMPLATE_FOLDER/jscript (yes, I've copied it to my template folder, not YOUR_TEMPLATE_FOLDER). I copied the file there myself.

It works well under the Responsive Classic Template, so obviously there's an issue in the Fidelity template.

Any suggestions?