If the charging keyboard mode light keeps flashing, there are several possible causes:
1. Charging status: Some keyboards flash an indicator while charging. This is normal and indicates that the keyboard is being charged and fully charged.
2. Connection problem: Check whether the connection between the keyboard and the computer is stable. If the connection is unstable, the keyboard mode light may blink. Try reconnecting the keyboard, or replace the USB cable to test.
3. Keyboard failure: If none of the above is a problem, the keyboard may be faulty. Try restarting the keyboard, or follow the keyboard's instructions to restore factory Settings. If the problem persists, you may need to contact the keyboard manufacturer for a repair or replacement. In short, to determine why the keyboard mode light keeps flashing, you need to carefully examine the connection, charging status, and the condition of the keyboard itself.
It may be that the wire inside the keyboard cable is disconnected.