Please do the following
1. Launch the app
2. Force Quit the focus@will application (using the double click then upward swipe).
3. Delete the app - Press and hold the app icon and wait until it wiggles and a little delete (x) icon appears over the app icon.
4. Press the delete icon and confirm you want to delete the app.
5. Once it has been deleted, please go to the App store and reinstall to get a fresh version.Here's the link to focus@will in the App Store:
6. After installing please reboot your iOS device.