It sounds like you're experiencing an issue where enabling force deny mode on your device for Clash of Clans allows the game to run without issues, but it causes your default camera app (Leica Cam) to stop working. Conversely, when you disable force deny mode, Clash of Clans crashes, and the camera app may also crash. This could be due to a conflict between Clash of Clans and the camera app, possibly related to system resources or permissions when force deny mode is active. To resolve this, you might want to check if there are any specific permissions Clash of Clans requires that could be conflicting with Leica Cam. Additionally, updating both apps to their latest versions, or trying a different camera app might help. If the problem persists, you may need to look into your device's settings to see if there are any other settings that could be adjusted to prevent the conflict. Consulting the support forums for either app or your device could also provide more targeted solutions.