Looking for logging into the Fitbit Developer site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Fitbit Developer site. After that you can login as usual with your login credentials.
https://dev.fitbit.com/login
https://dev.fitbit.com/
https://www.fitbit.com/dev/dev
https://www.fitbit.com/login
https://dev.fitbit.com/build/reference/web-api/
https://dev.fitbit.com/getting-started/
https://dev.fitbit.com/build/reference/web-api/basics/
https://community.fitbit.com/t5/Web-API-Development/Is-Fitbit-API-Login-down/td-p/3195791
https://community.fitbit.com/t5/SDK-Development/bd-p/sdk
https://qiita.com/makopo/items/32f41128c2e055cec68f
https://www.programmableweb.com/api/fitbit
https://dev.to/iansavchenko/making-an-app-for-fitbit-os-my-impressions-2ijb
https://auth0.com/docs/connections/social/fitbit