No need to enable the nfc button at all ,please ignore .The NFC of the TPS530 is a special NFC. It enabled NFC by default.The option under “Settings->More->NFC” is no using.Please ignore the option “Settings->More->NFC”.
Please use demo app to test
https://service.telpo.com:8093/index/user/fetfile?key=ZVYKljOiqJGr7dH8