KM636 - Keyboard Doesn't Work Sometimes

After using the keyboard for a while, there is no response when I press the keys. Then when I look at the light it shows as blinking. When you remove and plug the USB transmitter, it continues to work, but after working for a while, it stops responding again. I tried changing the batteries and still the problem did not go away.

Operating system I use: Ubuntu 22.04.2 LTS