I updated my motherboard bios and my graphics card in 1.5 months. I think after the bios update it is detected as a new device and it may cause a problem.
Because I did the same thing on my second system. My device that was visible in my Microsoft devices section stopped appearing after the bios update. I verified this on a second device.
I don't think the problem is the bios update.
I tested this...I removed the account with the problem from my PC, and I created a new Microsoft account which I linked to my PC. The device is visible on the Microsoft website and everything works as it should. Then I had to disconnect the device from the new account I have to use the one with the problem because it has a digital Windows license as well as an Office license.
Just to mention, the account problem started because i reinstalled windows 11 and i changed the pc name .
I think all we can do is wait for ms to fix the problem . ...btw i contacted support and they screwed me into reinstalling the system again . they are totally useless. :((