Use "Print with password" to circumvent the payment process during testing.
At the payment method selection page, choose "Print with password" and put in the password that was set during during the installation of Princh. Press enter. The document(s) will now print without requiring payment.
The “Print with password” payment method is meant as staff’s method to print without paying typically used in testing situations. The password is set during the installation phase. If you'd like to change the password, let us know here.