I have a Chip Card Reader, not a Contactless Reader. Many of the threads treat them like they are the same device. They are quite different. My reader does not have lights that a Contactless Reader has so post about what lights to watch for are useless. As well as post saying to push a button on the Reader. My Chip Card Reader does not have any buttons.
Definitely see how that can get confusing! I'll share the feedback with our team here.
In the meantime, is there something in particular I can help with in regards to your Chip Card Reader?
Square Community