Enter your email. We send a six-digit code; no password. Once you are in, this device stays signed in for ninety days.
Staying signed in. Each device or browser signs in once and then stays signed in for ninety days of use; every day you use it pushes that out again. You only see this page again after Sign out, in a private window, or on a new device.
On an iPhone: open this page in Safari, tap Share, then Add to Home Screen, then open the MistCo icon and sign in there. A sign-in in Safari does not carry into the installed app.