I'm sorry I did not answer before, I've been busy. I've tried it and the same thing happens to me, both in a laptop with Win 8.1 and in the desktop with Win 10, (iCUE in 3.8.91 and HS70 in 0.64).
I also tried to change the USB port dongle as I read in another post. I also left them charging for 10-12h and still not charging. Only I can only use them when they are connected by USB and having to force the update. I did not buy some wireless headphones to use them always with cable.
Please give me a solution soon.
Thank you.
A greeting.