An app crashing occurs when your internet connection is slow or unstable. In this case, optimizing your network's strength usually works. If the problem persists, try below steps in order.
Step 1. Switch off your mobile data/Wi-Fi router for about a few minutes.
Step 2. Turn off your device and Restart it again.
Step 3. Switch on mobile data or turn on the router and connect to Wi-Fi.
Step 4. Try using another network connection if the App still crashes and does not run.
If the problem still persists, you may change the settings to solve the problem as suggested below.