Install GMVify Post Purchase from the Shopify App Store and open it from your admin.
Create an offer: start from a template (personalized re-buy, buy another one or cross-sell from a collection) or from scratch, pick the product and discount, and choose which orders it shows for.
In Settings › Checkout, under Post-purchase page, choose GMVify Post Purchase and save. The setup guide on the app’s home page opens that setting for you.
Place a test order: the offer appears right after payment, before the thank-you page.
Still stuck?
Open the app in your Shopify admin, go to Help and click Chat with us, or email [email protected] with your store’s myshopify.com address.