Magtek Credit Card Reader - Results in Red boxes (Errors) when swiped
I have the Magtek Card reader (Pic Included of exact type)- When I attempt to swipe a card for payment, the boxes populate with card info (Card # with only last 4 visible, expiration) security code and zip code were not populated. The issue was all the boxes were outlined in RED and it also said "Card # not valid" - even though it was swiped. It would not allow me to update those boxes or even apply the zip code to box for zip codes.
Does anyone have any idea what troubleshooting I can do? The light is green- it appears it is ready to process a card transaction. However, as I explained- I receive the errors and red boxes.
Can anyone provide any guidance, insight, etc?
I appreciate it . 
