Hi, @blew888, t he Zip does not have the ability to track sleep, so if that is the only tracker attached to your account, that will be why the sleep tile is missing.
Sense, Charge 5, Inspire 2; iOS and Android
Hi, @blew888, unfortunately not. If you don't have a Fitbit that tracks sleep, you won't have it available on the website.
Why not get in touch with Customer Support on contact.fitbit.com ? Let them know that you have lost your Flex and that you are disappointed that your other Fitbit, the Zip doesn't track sleep. I know that they often are able to offer loyal customers a discount on a new Fitbit if they have lost their tracker and are thinking of upgrading. I can definitely recommend the Flex 2.
Good luck, and let us know how it goes.
Sense, Charge 5, Inspire 2; iOS and Android