Hey Amy, Hope you are keeping well.
To resolve this, you need to identify which Microsoft account is linked to the charge. Follow these steps:
- Visit https://account.microsoft.com and sign in with your known Microsoft accounts.
- Check the "Services & subscriptions" section for any subscriptions matching the $6.30 charge.
- If you can't find it, contact Microsoft Support directly at https://support.microsoft.com/contactus to get help identifying and canceling the subscription.
Hope this helps!
Regards,
iDev