Microsoft deprecated cross-signing, now I can't load my kernel driver

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Windows

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certificate

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Hi,

I'm developing a kernel driver for Windows and recently MS deprecated the procedure to sign drivers, see https://docs.microsoft.com/en-us/windows-hardware/drivers/install/deprecation-of-software-publisher-certificates-and-commercial-release-certificates

I tried contacting them 2 months ago and they claimed that submitting drivers is still the same for attestation (which I use), as documented here https://docs.microsoft.com/en-us/windows-hardware/drivers/dashboard/attestation-signing-a-kernel-driver-for-public-release

However, after following the instructions, my driver fails to load with error 0x800B010C A certificate was explicitly revoked by its issuer Any idea why? Seems MS closed the dev support chat and they no longer answer my emails.

Thanks

What I have tried:

purchased EV certificate, uploaded it to the MS portal, submitted for attestation (see above) and tried loading the driver signed by MS.