Google has been dismantling the old Fitbit experience piece by piece ever since it replaced the app with Google Health earlier this year. Some longtime users resisted the move by clinging to older Fitbit versions, even after Google warned that builds older than version 5.0 would lose support in July. That workaround somehow kept working for months, but the reprieve now appears to be over as Google starts blocking access behind a mandatory update screen.
Reports are emerging from users still running the old Fitbit app that they can no longer get past the prompt without updating. Since installing the latest version means moving onto Google Health, this effectively forces the remaining holdouts to finally make the switch.