Card reader shows offline

Check reader LEDs and signal strength in the portal. Verify the SIM is active and the APN is correct. If the reader is mounted inside a metal cabinet, move the antenna outside or use an external antenna kit.

Reseat MDB and power connections. Low voltage or a loose MDB cable often causes intermittent offline status. Reboot the reader and confirm it reconnects within a few minutes.

If the device remains offline, test it in a different machine to isolate whether the issue is the reader or the controller. Update firmware if an update is available.

• Confirm the reader shows the last successful transaction time.
• Compare the payment portal timestamp with the machine vend log.
• Check for repeated “declined” events that signal network issues.

• Verify RSSI/signal strength and SIM status in the portal.
• Inspect the MDB cable for pin damage or loose seating.
• Measure power at the reader if voltage drops under load.

• Keep a visible refund policy and contact method on the machine.
• Log offline events and resolution times for each location.
• Proactively test transactions after maintenance.

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• Document changes with time, machine ID, and location name.
• Verify settings, pricing, and service modes after each fix.
• Capture before/after results to confirm resolution.

• Test with known-good inputs and controlled conditions.
• Validate telemetry, alerts, and payment logs where applicable.
• Confirm location expectations and update the site contact.

• Configuration drift after firmware or component swaps.
• Inconsistent power or network conditions at the location.
• Gaps in preventive maintenance routines.

• Monitor for 7 days and note any repeat errors.
• Schedule follow-up if the site is high-traffic.
• Escalate with full logs and photos if issues repeat.

• Compare device logs with settlement reports.
• Confirm offline mode settings and retry intervals.

• Verify MID/terminal IDs match the deployed reader.
• Confirm batch timing and payout schedules.