Nordica Returns

Returns, exchanges and the EU withdrawal button, by Variegata Nordica.

A return page in your store: customers find their order and pick what goes back and why.
Money back, an exchange or store credit, done through Shopify’s own returns.
Every return rule on every plan: window from the order or delivery date, final sale, exclusions, approve by itself.
Customers send returns to your address. Attach a label from your shipping app whenever you like.
The EU withdrawal button: two steps, no login, a confirmation email. Free and unlimited.
One flat price. No fees per return, per order or per seat.

Install it from the Shopify App Store, then open it from Apps in your Shopify admin.