Important: When you uninstall the app, your subscription won't canceld. To cancel your subscription follow the guide below.
Open the Google Play app
At the top right, tap the profile icon
3. Tab Mange your Google Account
4. Tap Payments & subscriptions
5. Scroll down and tab Manage subscriptions
6. Tap Filemail - File transfer To send Large Files
7. Tab Cancel subscriptions
8. Tab the reason you want to cancel and press Continue
9. Confirm by taping Cancel subscription
10. Your subscription is now cancelled and you will no longer be charged. The subscription will be available for as long as you have paid for.
You can read more about how to cancel a Google Play subscription on Googles support page here