So, onboarding bumps in the road. Downloaded to my phone first, laboriously typed in the magic code from the email, and hey, it works.

Switch to iPad, it's downloaded already, and... I have to enter my email again? AND the code? Okay, the email says, "Click this link on your iPad to register" so I click the link on my Mac (don't do email on my iPad), transfer the link and... Nope! It won't accept it, gives the same, "Open this link on your iPad" message.

I'm with the "Add sign in with Apple" people... seems like a much nicer thing, for us.