To use WordPress, you have to set up options to activate payment methods..
In WordPress admin panel, go to Literally WP > General Setting then You will see setting dashboard..
On payment options tab, you have to set up payment options.
After payment options set up, set up what you would like to sell...
To use this plugin on environment, you have to contract with them.
Except Bank Transfer, contract with payment agency is required.
You can visit plugin support site LWPer info and feel free to ask questions..
LWP has some UIs like forms, button and so on, and they are designed suit to WordPress Admin UI.
If you would like to customize them, you can stop assets auto-loading and use your own CSS.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
Read more