You can create a new PayPal Subscription for automatic payments when your invoice is created (and that it is not overdue) by following below steps:
1) Login to members portal https://members.softsyshosting.com/clientarea.php
2) Click on Billing -> My Invoices
2) Click on View Invoice beside unpaid invoice.
3) Select PayPal payment gateway.
4) Click on PayPal Subscribe button and proceed to create PayPal subscription.
Subscription creation is only available when you are not overdue with invoice payment