Personal, when I disable the check method or money the payback returns error, does anyone know why?
Next Exception: Report ID: webapi-5abd1a0302ca1; Message: Property "Title" does not have corresponding setter in class "Magento\Quote\Api\Data\PaymentInterface". in /home/*/public_html/vendor/magento/framework/Webapi/ErrorProcessor.php:195
Because the error it seems there is an error into the module (but maybe you only need to compile the code, I can't be sure).
Is that module available at some place to check the code?