> Why wouldn't they reject a ID/passport with some details blacked out?

A better question is why would they? Sending an unredacted copy of my ID to some foreign company just to buy some hosting would seem crazy to me.

Here's a quote from their authentication email when I signed up a few years ago:

> As a new customer, we kindly request that you provide us with a copy (scan/photo) of your passport or ID card for authentication purposes. You can blur or block out information that is not necessary for authentication.

I sent in a picture of my driver's license with everything except my photo, name, and address blacked out, and they approved it. (In hindsight I'm not even sure why I didn't black out the photo part.)