If you haven't sign up already, go to the signup page and register your e-commerce.
This process will end up sending to you an email with a set of credentials, required on the step 6 of this manual. This credentials identify your shop.
Go to "Modules and Services > Modules and Services"
Click on "Add new module" on the up-right corner.
Click on "choose file" and pick the file previously donwloaded.
Click on upload the module.
Go to the module list, search for "WorldCoo".
Click on the "install" button placed on the same line.
Once installed, a configuration button will appear, click on it.
Select the environment you want to install (test mode active or not)
Introduce the credentials emailed to you on step 1 of this manual
Go over your checkout and make a donation test. The widget should appear on your payment method step (by default).
Only payed orders generate valid donations.
Once tested, you will get an email after 24h/48h with your production credentials.