A. 1. Restart your iPhone: Sometimes, a simple restart can resolve app crashes. Press and hold the power button until you see the 'slide to power off' option. Slide it, wait for the device to turn off, then turn it back on.

B. 2. Update the app: Check if there is an update available for the Sahel app. Go to the App Store, tap on your profile icon at the top right, scroll down to see pending updates, and update the app if available.