It looks like your keyboard isn't getting enough light. Its energy reserves are low and getting lower as you use it. Fortunately, that's easy to fix. Just expose your keyboard to more light - and make sure it's exposed to light when you're not using it, too. Note: it will take several days for the status to be updated.

Need help figuring out if it's getting enough light? Press the CheckLight hot key on your keyboard and check that the lux gauge indicates 100 lux or more. If not, try moving your keyboard closer to a window or light source.