This app claims to be free here in the Shopify marketplace but there is a required subscription that is not noted here.
Hey! The app is free, can you please send us your Shopify Domain to firstname.lastname@example.org? I will check what happened for you, the app 100% free by now, we are not charging anyone since we launched the app, the price is $0.
Please let us know your info so we can address this for you and explain what happened.
- Revy Team