Does the same thing happen with all USB ports?
Does the keyboard remain lit even after the PSU switch is moved to "OFF" (If the PSU has such a switch....).
Are you able to try the keyboard on another known working computer?
Idea being to eliminate a hardware problem.
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Just how much can you do/edit with respect to that imported RGB profile?
Does the following link present the applicable iCUE manual:
https://docs.google.com/document/d/1xv63Arhc0Y3-cELX03Pqgl2sBdnJVoaO-2ygn2sogEw/edit
Note the Quick Fixes - Page 32 of 32
I also noted on Page 12 references to Key Presses and Key Releases.
If you have to press the backlight brightness key to turn it (the red/keyboard) off then maybe somewhere you need to release that key that made the keyboard red.
However the note states that that does not work with respect to Brightness.
So somewhere was a key pressed to get Red and then that key left unreleased?
No way for me to test any of this so just thinking out loud.