Provide customers with a flexible payment option by enabling Shopify's Shop Pay Installments. Go one step further and encourage customers to try this payment type by displaying a Shop Pay Installments Banner on your product page.
Confirm You're Using a Compatible Version
The theme files for older versions don't include the Shop Pay Installments Banner, so confirm you are using a current version with the necessary enhancements.
Using an older version?
Update to the latest version to complete compatibility with unit pricing features.