---
title: The Device software freezes or does not respond. What should I do?
description: Restart an unresponsive OPTOVERA Device, check internet access and synchronize the user list and pending measurements before returning to testing.
---

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# The Device software freezes or does not respond. What should I do?

## Restart, verify internet access, synchronize, and seek support if the problem persists.

1. Power the Device off.
2. Turn the Device back on.
3. Confirm that the Device is connected to Wi-Fi or cellular data.
4. Use the SpeedTest app to check the internet connection.
5. Press **UPDATE USERS LIST**.
6. Check whether Pending measurements returns to zero.
7. Open the Device menu and check **USERS LIST** to confirm that it is current.

If the issue appears related to connectivity, connect the Device to a different network and press **UPDATE USERS LIST** again.

If the Device software continues to freeze, does not respond, or cannot synchronize, contact OPTOVERA support.

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