Hi @Blanche79 ,
First, I think you should reach out to Langify support team by submitting a ticket to discuss further on subscription canceling and charge reverse, then you can follow this guide to know how to remove the app from your store:
- Before you uninstall the app, you should un-publish langify from your theme by pressing the “un-publish” button in the “Theme Settings” section of langify.
- Afterward, you can simply remove langify v2 by deleting the app in your Shopify ‘App’ section.
I hope you can get proper assistance from the support team!