
Fitbit users were experiencing problems. Many people found themselves unable to sync their best Fitbit to the Fitbit app, and those who uninstall the app were unable to get back in with their usual account details.
This lead to Fitbit stating that it's "experiencing a major outage" on its status page. Users were effectively unable to make use of the app – an app Fitbit Premium users are paying for – leading to missed sleep and readiness scores, and failed data aggregation and interpretation.