A. Check the app's compatibility list on the official website or app store to ensure your phone model is supported. If your phone is not listed, consider updating your phone's operating system to the latest version, as compatibility issues may arise from outdated software. If the app still does not work, try uninstalling and reinstalling the app to see if that resolves the issue.

B. If the app continues to malfunction, consider using an alternative device that is known to be compatible with the app. You can also look for similar apps that offer the same functionality and are compatible with your current phone model.