I found my solution and it worked. I used my win 7 laptop to download the appropriate 64 bit exe from Logitech website, run as administrator, and it worked on win 7, the next button was highlighted when I plugged in the usb from throttle. I used win 10,8 and 7 ( not win 11) for download from Logitech website.
Tried with win 11 download and didn’t work. I copied the downloaded exe file from my win 7 laptop to the my win 11 laptop, installed it and all the drivers installed on win 11 and it worked. The next button was highlighted when usb plugged in from throttle.
There might be something wrong with the win 11 download installer that prevents proper installation on win 11. Now I see my MFD background light and all the throttle lights, where before no lights. Both laptop are HP. Hope this help. Reply back if this work for you.