The developer of BackUp is Bastien Miorin and all inquiries must go to them.
Cancelling a subscription during a free trial may result in losing a free trial account.
You must always cancel a subscription at least 24 hours before the trial period ends.
How to Cancel BackUp Subscription on iPhone or iPad:
Open Settings » ~Your name~ » and click "Subscriptions".
Click the BackUp (subscription) you want to review.
Click Cancel.
How to Cancel BackUp Subscription on Android Device:
Open your Google Play Store app.
Click on Menu » "Subscriptions".
Tap on BackUp (subscription you wish to cancel)
Click "Cancel Subscription".
Cancel direct on BackUp website 🌐
Reach out to Bastien Miorin
If the company has an app they developed in the Appstore, you can try contacting Bastien Miorin (the app developer) for help through the details of the app.