To prevent any interruption of service, app subscriptions are set to renew automatically. You can cancel your subscription if you no longer need it.
Important:
Only certain roles, for example site owners, can cancel app subscriptions. If you don't see the option to cancel an app subscription, you may not have the required permissions. Learn more about roles and permissions.
To cancel an app subscription:
Go to Premium Subscriptions in your Wix account.
Click the More Actions icon
next to the relevant app.
Click Cancel App.
Select Cancel auto renew and click Submit.
Tip:
Don't forget to remove the app from your site if you're no longer using it. Learn more about deleting an app from your site..
This article is credited to the Wix team - https://support.wix.com/ and we thank them for that!