How to setup Paypal subscriptions for invoice payments
Here's how to setup a Paypal subscription for recurring payments:
Login to the client area
Your due invoices can be found on the client area home page, or under "Billing" -> "My Invoices"
Click "View Invoice" next to the invoice you wish to pay.
When the invoice loads, make sure "Paypal" is selected, then click the "Paypal Subscribe" button (If the invoice is overdue only "Paypal Checkout" will show)
Please note: Paypal subscriptions can only be setup for invoices which are not overdue. If your invoice is overdue, you'll need to pay this invoice then setup the subscription on the next invoice.