A. Check your device's haptic feedback settings. Go to 'Settings' > 'Sound & vibration' > 'Vibration intensity' and ensure that the haptic feedback is enabled and set to a suitable level. Restart the app after making changes.
B. If the issue persists, try clearing the app cache. Go to 'Settings' > 'Apps' > 'Nexo' > 'Storage' > 'Clear Cache'. This can help resolve any temporary glitches.