If I only try to open the "new hardware submission" dashboard page, I get a message "Access restricted".
After some discussion with Microsoft's AI agents, I could eventually open a support ticket, but even though the ticket mentions an "expected reaction of 8" (days, I suppose), there hasn't been a single reaction from Microsoft support for more than 3 weeks now.
What type of hardware is it?
The linked OSR thread has a lot of other driver developers including a lot of them maintaining drivers for hardware devices.
With Microsoft removing our access to the hardware section of the partner center, we are not able to submit drivers for either attestation or WHQL testing.