You can cancel out the floating license subscription at any time yourself.
Here is how:
- Log in your PayPal, go to config / "Account Settings" / "Money, Banks and Cards" / "Automatic Payments" / "Set Automatic Payments"
- Find the subscription of MG-Picker Studio and cancel it.
Once I receive the notification of Paypal about the cancellation (it is great if you can kindly let me know), I will update your floating license, so it will expire on a date.