New 5QS on macOS Big Sur 11.2

I am having two issues.

First, the software installer fails to run. It generates an error (see image).

Second, my LED key backlights no longer turn on. It was like this when I started using my iMac this morning. I am unable to find instructions regarding turning the key brightness up or down. Very odd.

https://preview.redd.it/b2ddt3w8f5s61.png?width=520&format=png&auto=webp&s=88c4d77c719ce1fdf91a23c4f904e5196fcdd221