"identity validation process" Does not work. Results in "No access" error

Question

I am trying to setup Trusted Signing. For this I must verify my Organisation.

I got this email: "Complete your identity validation process"

I click the button in the email, login, error:
"
No access

Some users, entities, and locations are restricted from using certain Microsoft services. For this reason, leveraging anonymizing or location hiding technologies (such as VPN, virtual machine, Internet tracking blocking, etc.) when connecting to these services is not allowed. If you are using one of these technologies, you'll need to disable/change your settings to gain access.

If you believe you encountered this problem without one of those causes, please wait 24 hours and try again. If the issue persists, contact our support team and reference the below message code and transaction ID. We will engage a team of experts that will help verify your account.

Transaction ID: PII
"

I'm NOT using a VPN, there is nothing strange about my computer setup. I've retried the process with a VPN, same result.

Please fix your broken website so I can proceed with my task.