Max Pro AX11000 LED light too DIM

I have three (3) Surfboard Max Pro AX11000 devices.  Two (2) I purchased several years ago and the blue LED status light rings are too DIM.  I went into the app and pushed the slider all the way to 100%, but they are still too DIM.  I rebooted them and the LED is nice and bright during reboot, until it reaches the blue LED at the end when they suddenly are very DIM again.  The third unit that I recently purchased has a nice bright blue LED light.  Any suggestions on how to get a brighter blue LED light, so I can easily check the status in a well lit room?