Website Fast Tags support subscription apps (like Recharge) but might need some additional configuration. Please ensure the following criteria are met for a smooth fast tag / subscription integration.
Link Subscription SKUs and/or Variant Ids
If you use a separate SKU and/or Shopify Variant Id for subscription vs one-time items, make sure to create aliases for the subscription items as well.
Recurring Order Shipping Rates
Set up your subscription app to either recalculate shipping rates or always choose a standard (5+ day) shipping rate for recurring orders. If you're using the Recharge app, you should select Dynamic Shipping Rates. DO NOT select Retain.
Subscriptions and Cart Minimums
The single purchase item price (not the subscription item price) is reflected in the cart value and will be used to determine if the cart minimum threshold is met.