Hi there @Suca,

Welcome to the Community! Happy to help! 

At this time, it’s not possible to change the language the "Coupon applied to checkout!" message appears in as it is hard-corded into the function of the form itself.

While this is an open feature request that we currently have with our product development team, I don’t have an exact timeline on implementation. However in the meantime, you can definitely accomplish this by creating a custom form! This way you can customize your form’s error messages, coupon callout messages, etc. in the language you need.

I’d suggest reaching out to the developer on your team or a Klaviyo partner, better yet one of our Community Champions, to create this custom form for you. The documentation below will give you all the tools you need to implement this!

• Sign-up forms and subscribe pages reference: Custom sign-up forms
• Collect email and SMS consent via API

Hope this helps!

-Taylor