I tried the "Change SecureLogin" flow, and it's not obvious to me how that works if I'm changing my master password. It lets me select a new profile from within the app, but won't that also change my email address?
Right now email is not changed, because it's not used as primary key, it's just a label like your fullname.
After you changed you can get into the same account using your 2nd profile only. Ignore the email: site owners are free to confirm it, but playground does not.
After you changed you can get into the same account using your 2nd profile only. Ignore the email: site owners are free to confirm it, but playground does not.