Pixl.js NFC does not want to work

It got shipped with the latest version:

>process.env
={
  VERSION: "2v01",
  GIT_COMMIT: "748a4d3",
  BOARD: "PIXLJS",
  FLASH: 524288, RAM: 65536,
  SERIAL: "51ce5f62-7b5098e4",
  CONSOLE: "Bluetooth",
  MODULES: "Flash,Storage,hea" ... "el,graphical_menu",
  EXPTR: 536882408 }

I am powering it via micro usb. I've also tried a CR2032 (brand new).