I have a Samsung that doesn't have the headphones jack so I purchased the lightning POS. I then purchased a USB C adapter to connect them. It seems like the app isn't recognizing the square card reader. Anyone have any suggestions?
if you want to use the old headphones jack reader get an usb-c to 3.5 Mm adapter , walmart and amazon both have these for under $10
USB Type C to 3.5mm Female Adapter
sorry saw you bought the apple one , then try the USB C Male to Compatible for Lightning Female Adapter
Square Community