I have a POS System - my customer display stopped acknowledging card payments

[Funkfleas]

I have a POS System - my customer display stopped acknowledging that a card has been either placed in the chip reader or swiped.  The display is still showing the transaction and allowing the customer to sign, asking which type of receipt..  it just will not take a charge .

[VanKalkerFarms]

I assume you are talking about the Square Register. https://squareup.com/us/en/hardware/register

if so you should contact Square support and they can help troubleshoot it. 

You'll need your customer code to call.  Follow the instructions below on how to get it.

https://squareup.com/help/contact

Click “More”

Click "I don't see my issue"

Click "Call Support"

Write down your Customer Code

Call 1  855  700  6000

Depending on your specific account, you might not have phone support available, or you might have limited hours of support. If your account doesn't have phone support, Email is the only way to communicate so that there is proper documentation of the conversations.