A. 1. Restart the app: Close AR Drawing completely and reopen it. This can refresh the app's interface and resolve button responsiveness issues. 2. Check for screen overlay: Go to 'Settings' > 'Apps' > 'Special app access' > 'Draw over other apps'. Disable any apps that might be overlaying on AR Drawing, as this can interfere with button presses.

B. 3. Adjust touch sensitivity: If your device has a touch sensitivity setting, try adjusting it. Go to 'Settings' > 'Display' > 'Touch sensitivity' and increase it to see if it helps with button responsiveness.