I have a question/concern regarding app charges and billing

Shopify manages all app charges and billing cycles according to their policy here.

Please note the following:

• No need to update us on any payment info changes (e.g Changing your paying credit card) - Loox is automatically updated once changes are made on Shopify's end.
• Shopify will stop all future app charges from being triggered only once an app is removed from a store. This does not include any pending charge that has already been created.
• To the best of our knowledge, Shopify charges merchants that have downgraded their plan a prorated amount depending on how far into their billing cycle they were when downgrading.
• For any further information regarding app charges and billing, we suggest contacting Shopify's support team at [email protected]