@leocg
strange, I still can't find it
EDIT: I had a "lightbulb moment" and guessed my passcode. Apparently, I named it after my first car. Now the option to change it reappeared.
For posterity: I forgot my passWORD, reset it, and that kicked me out of Sync. I was unable to change my passPHRASE, until I remembered my passphrase. So advice: set your passphrase to something memorable, write it down, back it up on the cloud, etc, because if you reset your password, you cannot also reset your passphrase.
passphrase missing.jpg