Cycle race track lap counter

OK.
Some more tests show that it may have been a memory issue.
Limiting the stored lap data to 250 records resulted in the test running for about two hours now.

However, somehow the Transponders stop advertising now somehow after a few hundered iterations being toggled on and off.
This is the modified code:

/** =====================================================
 * throw off unknown BLE clients
 * @constructor
 */
var Firewall = {
  whitelist: {
    '14:7d:da:3f:53:31 public': 'Macbook Work',
    '50:ed:3c:01:69:ab public': 'Macbook Air'
  },

  init: function () {
    NRF.on("connect", (addr) => {
      if (!(addr in this.whitelist)) {
        NRF.disconnect();
      }
    });
  },
}; // Firewall

var id = 0;
var on = true;
function toggle() {
  if(id == 0) {
    NRF.wake();
    digitalPulse(LED2, 1, 200);
    id = setInterval(
      ()=>{
        digitalPulse(LED3, 1, 30);
        on = ! on;
        advertise();
      },
     5000
    );
  }
  else {
    digitalPulse(LED1, 1, 500);
    clearInterval(id);
    id = 0;
    NRF.sleep();
  }
}

var longId = 0;

function longPress(state) {
  if(state) {
    if(0 == longId) {
      longId = setTimeout(
        () => {
          toggle();
          longId = 0;
        },
        2000
      );
    }
  }
  else {
    if(longId > 0) {
      clearTimeout(longId);
      longId = 0;
    }
  }
}

function advertise() {
  if(on) {
    NRF.setAdvertising(
      {},
      {
        name: "Velo" + NRF.getAddress().substr(-5).replace(":", ""),
        showName: true,
        discoverable: true,
        connectable: true,
        scannable: true,
        interval: 20,
        manufacturer: 0x0590,
        manufacturerData: [Puck.getBatteryPercentage()]
      }
    );
  }
  else {
    NRF.setAdvertising();
  }
}

function onInit() {
  Firewall.init();

  advertise();
  setInterval(advertise, 60000);

  toggle();
  setWatch(
    (btn) => longPress(btn.state),
    BTN,
    { repeat:true, edge:"both", debounce: 50 }
  );
}

The effect is this:
The blue flashing still occurs, but the change to advertise the manufacturer id doesn't seem to happen, because the Puck is not recognized by the tracker anymore.
Toggling on/off via button (resutls in NRF.sleep() / NRF.wake()does not help.
Doing a reboot (power cycle) makes it work again.

It seems the repeatedly change via NRF.setAdvertising() breaks something over time.

Very strange, but no issue for the later use case.