A. 1. Force close the app: Go to 'Settings' > 'Apps' > 'Walker's Link' > 'Force Stop'. Then reopen the app. 2. Clear app data: If force stopping doesn't work, go to 'Settings' > 'Apps' > 'Walker's Link' > 'Storage' > 'Clear Data'. This will reset the app but may require you to log in again.

B. 3. Check for updates: Ensure the app is updated to the latest version, as updates often fix bugs.