This is the second device I have received and no matter what has been tried I continue to get the error "Pairing Failed". I have tried on both my iPhone 11 and iPad 12.9. Contacted customer support who had me remove the POS app and re-install it, turn off Bluetooth, and power down the device for 5 minutes then try again. I have made sure that the POS application is up to date (currently running 669.0 build 1002). Both devices see the card reader, but simply will not connect.