I installed the plugin and added the widget. So far everything seems to work, but i have no clue how the checkout is supposed to be set up. I see the possibility to make a custom checkout page, but this would mean that php is needed to get the variables from the plugin. I could not find any information in the readme or anywhere else on how to accomplish this. I am aware that there is a checkout.php page, which should be the default, but i have no clue how to get it to work. Could anyone using the plugin please let me know how to set it up properly.
Thanks!