Q: how do i make my alternate email address my primary for Apple ID

log in at appleid.apple.com and enter an alternate email address, then you can make that your primary email address.

Sorry, but that doesn't work.

For some ridiculous reason, Apple won't let you use an existing alternate email address.

You have to first delete the alternate email address you want to use, then edit the primary address and enter the address you want. You'll then have to re-verify the address you just deleted and when it asks you to enter your AppleID, you use the new address.

I'm sure there used to be a 'Make primary' link next to your alternate email addresses. I guess that was too easy.