Hi MaLd0n,
I could not see the device now in IOReg and also I switched over to Big Sur Beta 9, where the sleep is working fine now. But I have to wake the device by using the power button where the mouse/keyboard (or) any USB device doesn't work.
But I could manage with it!
Word of appreciation: I have been to many forums seeking help but I have not received a reply like this from any other sites. You are so wonderful and I pray that God bless you for your actions and heart! I am unable to PayPal, so finding another way to send a small donation to you!
Thanks a ton!