Many of the payment methods available for wp2print will have both a "test" and a "live" mode. When you are configuring your site, your payment method was set to "test" mode. This means that no real payments are processed when you place orders. When you go "live" with your wp2print system, it is very important that you confirm that your payment system is switched from "test" to "live" mode.
In the left menu bar, click the "WooCommerce/Settings" tab. Then in the top menu bar, select "Checkout". You will see a list of the all the different payment systems available in your system. Search the various checkbox and dropdowns to find the control for test/live mode. Confirm that your payment method is no longer in "test" mode. The screenshot below shows the configuration page for the Stripe payment method:
