Wren plugins are licensed under the GNU General Public License v2 or later. A paid license gives you access to updates and support for the number of sites and period you bought.
If you don't renew, the software keeps working; you stop receiving updates and support. When you renew, you pay the same price as your original purchase for the same plan.
The software is provided as is, without warranty. We work hard to make it correct and we fix problems quickly, but we are not liable for indirect or consequential losses. Our total liability is limited to the amount you paid us in the last 12 months.
Purchases are processed by Stripe as merchant of record. Stripe's terms apply to the checkout.