Easy Digital Downloads support discount on initial order and renewal the subscription at full price. Assuming you have installed EDD Recurring Payments plugin and activated it.
In your WordPress admin, go to Downloads ? Settings ? Extensions ? Recurring Payments.
Enable One Time Discounts option and you are done.
Check this video to understand more on how WP SmartPay EDD plugin work with initial discount and full price renewal process.
Heads up! Full price renewal won’t work if you have Discount PRO plugin setup and it applied on checkout process.