Docker Demo download doesn't recognize my real email as valid

Trying to download the docker demo, mac/linux, I entered my real email and it displayed an error saying that it wasn’t valid.

I understand that having a .studio domain isn’t normal, but that shouldn’t leave me excluded from being able to use your demo services.

Because of this, I am unable to download the demo and evaluate your services.

Note: every other form, registration, etc (including this forum), has accepted my real email address.