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How do I troubleshoot Stripe card reader connection issues?

Fix a Stripe card reader that won’t connect to Momence Point of Sale. Check network access, DNS settings, Wi-Fi boosters, and your allow list.

Written by Natasha Donaghy

If your Stripe card reader doesn’t appear when you launch Momence Point of Sale (POS), work through these checks in order. They cover the most common causes.


Confirm Local Network Access (macOS and Chrome)

If you use a Mac and the Stripe card reader in Google Chrome, Chrome needs permission to access devices on your local network.

  1. Click System Settings > Privacy & Security > Local Network.

  2. Locate Google Chrome (or your default browser).

  3. Turn on the toggle next to it.

  4. Restart Chrome.

  5. Relaunch Momence POS.


Check Your Network and DNS Settings

DNS (Domain Name System) translates website names into addresses your device can connect to.

  1. Make sure your device is on the same Wi-Fi network as the card reader.

  2. Set your device’s DNS server to 8.8.8.8. Add 8.8.4.4 only if your device requires a secondary DNS server. For steps on a Mac, see How do I change DNS on macOS?

  3. If you changed your DNS settings, clear your browser’s cache and cookies.

  4. Quit and restart your browser.

Clear Your Cache in Google Chrome

  1. Open Chrome.

  2. Click the three-dot menu in the top right corner.

  3. Click Settings > Privacy and security > Clear browsing data.

  4. Select All time for the time range.

  5. Check Cookies and other site data and Cached images and files.

  6. Click Clear data.

  7. Quit and reopen Chrome.


Match Your Wi-Fi Booster’s Frequency

If you use a Wi-Fi booster, its frequency must match your router’s frequency. If they differ, the card reader may not work properly.


Check Your Allow List

Stripe Terminal needs both the POS application and the card reader to access certain domain names on your network. Add these domains to your network’s allow list.

To limit your router to specific devices, add their MAC addresses to the router’s Access Control list. Log in to your router (e.g., Xfinity) and check the Security or Network settings.


Contact Support

If the reader still doesn’t connect, email [email protected] with a description of the issue and the steps you’ve tried. A list of what you’ve tried helps the team find the cause and respond faster.

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