Hi and thank you for the module.

As there's no readme file - could you please tell me - what should be done in order to use the module? As I have enabled it through Drupal interface, set up all parameters and it doesn't seem to show up during checkout.

I have tried two independent websites with different OS/PHP/MySQL versions (one of them has the latest) and there's still no difference.

Is there any specific requirements for the module to work? Or what could be wrong with the module?