To purchase a paid subscription of SPP first sign into your trial account. Click your name at the top right and choose Billing from the dropdown menu.
When upgrading you can choose between a yearly or a monthly subscription. If you know you’re going to be using the software for a long time, the yearly option will allow you to save some money and make it easier without worrying about billing each month.
If you have an existing subscription that you’d like to change, we will credit any remaining days in your current billing cycle towards your new subscription.