Ok so with the great advice from @shellyswanson I have resolved the same issue. If you get an error that looks like this:
ERROR LOG:
09-13-2016 @ 15:20:09 – Info: Begin processing payment for order 5353 for the amount of 58.44
09-13-2016 @ 15:20:10 – Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => NOT_FOUND
[detail] => Resource not found.
[field] => card_nonce
)
)
Your theme is most likely using a modified checkout page. I was using a multi-step checkout with my site, courtesy of the theme. I turned it off and went back to the original Woocommerce checkout page and it now works.
Thanks Shelly!