We've added support for price localization in fixed fee coupons - upon creation of the coupons it's now possible to specify the discount amount in other currencies in addition to USD. Doing so allows users you to apply the coupon to subscriptions with non-USD currencies.

Fixed fee coupons can be applied to subscriptions only if they offer a discount amount in the currency of the subscription.

Price localization in fixed fee coupons is supported by the Stigg SDK for Node.js v3.51.0, Stigg SDK for Python v2.199.0, Stigg SDK for Ruby v2.199.0, Stigg SDK for Go v2.199.0, Stigg SDK for Java v2.199.0, Stigg SDK for .NET v2.199.0, Stigg SDK for JavaScript v3.31.0 or later.

More details about coupon creation in Stigg be found here.