iCMP Credit Card Reader Troubleshooting

This guide will help you identify and resolve issues that may arise while using the Ingenico iCMP Credit Card Reader. If this is your first time setting up the iCMP, check out our setup guide.

Table of Contents

Pairing Issues

This section focuses on issues that could arise while attempting to pair the iCMP with the iPad.

The iCMP won’t display “BT Pairing Required.”

  1. If your iPad asks for a PIN, tap 'Cancel'.
  2. Tap the black 'F' key four times in rapid succession.
  3. Pair the iCMP with your iPad.

“Pairing Unsuccessful. Pairing took too long.”

This error message appears on the iPad when you do not enter the iCMP pairing PIN in time. The entire PIN must be entered within one minute of initiating the pairing request.

  1. Tap 'OK'.
  2. If the iCMP still displays the PIN, wait a few moments for the iPad to ask for it again and reenter the PIN.
  3. If the iCMP displays “BT Pairing Required,” start the pairing process over.

    Still unable to pair? Try tapping the BT info icon next to the name of the device, then forget the device. Repeat the pairing process.

"App Not Installed...".

Simply tap ‘Ignore’ to disregard this iPad error message and continue with the pairing process.

My iPad is not listed as an available device on the iCMP.

  1. Check to see if Bluetooth is turned off on your iPad.

    If it’s off, switch it on. Your iPad should appear within just a couple of moments.

  2. If Bluetooth is on, hold the button above the iCMP’s micro USB port for 2-3 seconds to reboot the reader. Then, try to pair the device.

How do I unpair my iCMP from the register?

Unpair the iCMP from your existing register to use it with a different register, if you are asked to by a Customer Care advisor, or as a troubleshooting step to help resolve a stubborn issue.

  1. On the register, open the 'Settings' app
  2. Tap ‘Bluetooth’.
  3. Tap the blue 'i' next to the iCMP.
    Click to Enlarge
  4. Select ‘Forget this Device’ and tap ‘OK’ on the confirmation screen.
    Click to Enlarge
  5. With the reader powered on, press the black 'F' key four times in quick succession.

    “BT Pairing Required” will now be on screen. If you don’t see this, repeat step 5.

  6. (Optional) Re-pair the iCMP with the register or pair it with a different register.

    Visit our iCMP setup guide to learn how to pair the device with a register.

Common Error Messages

This section covers common errors related to processing transactions with the iCMP in ShopKeep. Visit our Credit Card Readers Troubleshooting homepage for any errors not listed here.

"No Payment Processor Found"

This error message means the account has not been set up for credit card processing.

  1. Contact your Point of Sale Specialist to sign up for ShopKeep Payments.
  2. Have an existing credit card provider? Ask them to fill out our Boarding Form.
  3. If you received an email stating the account was boarded, close the shift and open a new one.

“Couldn’t connect to processor”, “Couldn’t connect to gateway”, or “Can’t reach payment processor”

These errors occur as the result of the iPad having poor or no internet connectivity.

  1. Press the iPad’s home button to exit ShopKeep.
  2. Open a web browser and perform a Google search.

    If results load, force quit and re-open ShopKeep, then run the credit transaction again.

If search results DO NOT load, follow these additional steps:

  1. Open Settings and tap 'Wi-Fi'.
  2. Check that the iPad is connected to the correct network. If not, switch to the right one, force quit ShopKeep, and try the sale again.
  3. If the problem persists, troubleshoot the router or contact your Internet service provider for help.

"Card declined" or "Decline"

Card declined and Decline both mean the attempted charge was refused by the customer’s bank.

  1. Tap 'Retry' to try charging the card again.
  2. If declined again, have the customer contact their bank or finish the sale with a different card / tender.


This may appear if the iPad is running an old version of ShopKeep or if the swiper is no longer functional.

  1. Update ShopKeep and try the transaction again.
  2. If the problem persists, contact ShopKeep Customer Care.

“Error communicating with processor”

This error is different from “Couldn’t connect to processor”. It most often indicates an issue with how the account is set up. Contact ShopKeep Customer Care for assistance.

“Not a Credit Card”

This message appears when an employee swipes something other than a credit card, like a gift card. It can also occur if a credit card’s magnetic strip is faulty or damaged and hard to read by the card reader.

  1. Swipe a valid credit card.
  2. If the swipe fails, try to manually enter the card information.
  3. If the card is a ShopKeep gift card, tender the sale as Gift Card and swipe again.
  4. If the problem persists, contact ShopKeep Customer Care for further assistance.

"Activating Card Reader"

This message indicates an error in the Bluetooth connection between your iPad and iCMP.

  1. Disable auto-lock on your iPad.
  2. Force quit the ShopKeep app, then open ShopKeep back up.
  3. In ShopKeep, open the Control Panel and tap 'Hardware Setup'.
  4. Select 'Card Readers'.
  5. If the iCMP is listed on this screen, tap on it and wait for a green checkmark to appear.
    Click to Enlarge
  6. If the iCMP is not listed on the Card Readers screen, follow the additional steps below.
    • Unpair the iCMP from the iPad.
    • Hold the button above the iCMP’s micro USB port for 2-3 seconds to reboot the reader.
    • Wait for the iCMP to power off, power back on, and go through a few start-up screens.
    • If the iCMP displays BT Pairing Required: re-pair the reader with the iPad.
    • If the iCMP displays ShopKeep: quickly tap the iCMP’s F button 4 times and re-pair the reader.

"Card Reader Firmware Update"

This message indicates a firmware update is available for download to improve the connectivity and reliability of the card reader. The update can be completed when the prompt occurs or after business hours.

  1. Tap ‘Update Now’ on the prompt or ‘Update Device’ from Hardware Setup.
    Click to Enlarge
  2. DO NOT touch the iPad or card reader during the update.

    You may need to re-pair the device after the update.

If the problem persists, try moving your iPad and iCMP away from any potential sources of interferences like other Bluetooth devices, microwaves, and cordless phones.

iCMP Device Errors

This section covers error messages that may appear on the screen of the iCMP itself.

"This Lane Closed"

Just restart the iCMP to solve this problem and get back to business.

  1. Hold the button above the micro USB port for 2-3 seconds to reboot the reader.
  2. Re-pair the iCMP with the register.

    Visit our iCMP setup guide to learn how to pair the device with a register.

  3. Run the transaction again.

"Alert Irruption" or "Ready to Download"

These errors indicate a hardware or software problem. Contact ShopKeep Customer Care for assistance.

Miscellaneous Issues

This section covers miscellaneous issues that are not accompanied by an error message.

My iCMP will not power on.

If your card reader is not powering on when you hold down the power button (on the side of the device), try charging it for a few hours to make sure the battery isn’t dead. If it still doesn’t turn on after charging, check for physical damage around the charging port and the power button, then contact Customer Care for help.

I'm having problems accepting Apple Pay.

If you set up Apple Pay but have trouble using it at the register, follow these steps to troubleshoot the issue.

  1. If an error message appears in ShopKeep or on the iCMP, follow the steps for that specific error.
  2. Have the customer hold their device closer to the iCMP.

    They must hold their device within 1 inch of the reader.

  3. Check if the customer is using a compatible Apple Pay device.

    Visit Apple Support for a list of devices supported for Apple Pay.

  4. Make sure the customer has set up Apple Pay on their device.

    Visit Apple Support to learn how to set up Apple Pay on an eligible device.

  5. Ask the customer to restart their device, then try processing the transaction again.

    Visit Apple Support for the steps to restart an iPhone or Apple Watch.

Nothing happens when I swipe a card.

  1. Verify that the magnetic strip on the card is facing up as you slide it through the reader.
  2. If you’re swiping it correctly, there could be a problem with the card. Try using a different credit card.
  3. If multiple cards exhibit the same behavior, force quit the ShopKeep app.
  4. If everything else fails, unpair the iCMP from the iPad. Then, pair it and attempt again.

My iCMP is connected via Bluetooth, but the ShopKeep "Card Readers" screen displays a red X.

This problem occurs when the ShopKeep register app fails to recognize that the iCMP is paired with the iPad.

  1. Follow the steps to unpair the iCMP from the iPad.
  2. Hold the button above the iCMP’s micro USB port for 2-3 seconds to reboot the reader.
  3. After the iCMP turns back on, re-pair the device with your iPad.
  4. In the ShopKeep app, open the Control Panel and go to the 'Card Readers' screen.
    • If there is a green check next to the iCMP on this screen, troubleshooting is complete.
    • If there is still a red X next to the iCMP, follow the additional steps below.
  5. Repeat steps 1-2 above.
  6. Power the iPad completely off, then turn it back on.
  7. Open the iPad's Settings app and tap 'Bluetooth'.
  8. Toggle the Bluetooth setting off, then turn it back on.
    Click to Enlarge
  9. Re-pair the iCMP with your iPad
  10. In ShopKeep, return to the 'Card Readers' screen.
    • If there is a green check next to the iCMP on this screen, troubleshooting is complete.
    • If there is still a red X next to the iCMP, contact Customer Care for further assistance.

ShopKeep displays a manual card entry screen.

  1. Open the iPad’s Settings app and tap 'Bluetooth'.
  2. Look for the iCMP under 'My Devices'.
    • If the iCMP’s status is “Not Connected”, perform the troubleshooting step below.
    • If the iCMP’s status is “Connected”, perform these troubleshooting steps above.
  3. Look at the screen on the iCMP.
    • If the screen displays “BT Pairing Required”, proceed by pairing the device again with your iPad.
    • If the screen displays “ShopKeep”, tap the F key four times in rapid succession. Then, proceed by pairing the device again with your iPad.

My iCMP is stuck on the “ShopKeep” screen.

  1. On the Control Panel, tap 'Hardware Setup'. Then, press 'Card Readers'.
      iCMP is listed, but there’s no green check mark: tap iCMP to reconnect.
      iCMP is listed with a green check mark: force quit and reopen ShopKeep.

My iCMP displays "Swipe or Tap Card" when I’m not on a payment screen.

  1. Tap the 'Credit' button in ShopKeep. Does the ShopKeep app also display "Swipe or Tap Card"?

If it DOES:

  1. Cancel the transaction in ShopKeep. The iCMP should return to the ShopKeep screen.

If it DOESN’T:

  1. Force quit the ShopKeep app.
  2. Reopen ShopKeep on the iPad. The iCMP should now display the ShopKeep screen.
  3. If the iCMP is still stuck on “Swipe or Tap Card,” reboot it by holding the button above its micro USB port.
  4. Run a credit or gift card transaction to make sure everything is working as expected.

My iCMP does not process EMV/chip card transactions.

If your card reader allows you to run credit card transactions by swipe but not EMV/chip card, this is probably because your account is not currently yet set up for EMV. EMV is currently only available to ShopKeep Payments customers who are processing with a compatible card reader. To learn more about processing EMV with ShopKeep, visit our ShopKeep and EMV, EMV FAQ, and our ShopKeep EMV Liability Promise articles.

I’m having trouble with my iCMP Simplicity Stand.

Not to worry, just visit one the Simplicity Stand for iCMP Troubleshooting guide for help.

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