i can't see any traffic in product visualizers. what should i do?

I can't see any traffic in product visualizers. What should I do?

1. Make sure the session is not paused for your device and "Play" button is pressed on the product toolbar.
2. Check filtering settings are correct. You can configure filtering by followin Tools » Settings » Filtering tab.
3. Try to unplug your device from PC, configure a "Next Connected Device" session type and then plug your device back in.