Some of my Tracers are not blinking red (or not lighting up at all)
Try to manually turn them on using the small button on the side of the Tracer
If they still do not turn on you may have a faulty Tracer. Swap this player in your roster with another Tracer and contact support after your game to replace the fault one.
My case doesn’t say ON/OFF (it says REC/STOP)
You have an older case with different printing. But the buttons are the same. Press REC instead of ON.