In order to use the Billing module for invoicing and subscriptions you have to connect your bank or Stripe account. To connect an existing Stripe account or setup a new Stripe account, simply follow these steps:

  1. Ensure that the Billing modules is enabled in Settings / Module management.
  2. Navigate to Settings / Billing.
  3. Select the Standard option and enter your registered company name and country code.
  4. Click 'Continue'. This will open a new window that lets you setup Stripe. After you are done, you will be redirected to your portal and can start invoicing clients.