The card can not recognize

Please activate device’s NFC to use Smart Music Card
Android
Set the NFC by Standard mode. If it set to Card mode, Smart Music Card does not recognized. (If you have not set NFC options separately, most of them are in card mode.)
You can change the option at <Settings - Connections - NFC and payment>.
Most of Android devices NFC recognition function are located in the back of the center. (Can be different between each device.)
iPhone
You don’t need to set NFC separately. (Available on iOS 13 or later, iPhone 7 or later models.)
iPhone‘s should tag card at the top of the device.