I can't use one of my apps

The app is damaged or has not been updated to the newest version.

Uninstall the app and install it again.

1 of 13 steps Press and hold any app.
2 of 13 steps Press Rearrange Apps.
3 of 13 steps Press the delete icon next to the required app.
4 of 13 steps Press Delete.
5 of 13 steps Slide your finger upwards starting from the bottom of the screen to return to the home screen.
6 of 13 steps Press Settings.
7 of 13 steps Press General.
8 of 13 steps Press iPhone Storage.
9 of 13 steps Press the required app.
10 of 13 steps Press Offload App.
11 of 13 steps Press Offload App.
12 of 13 steps Slide your finger upwards starting from the bottom of the screen to return to the home screen.