I can't sign in to Synology NAS (DSM) using 2-factor ...
kb.synology.com › en-us › DSMNov 08, 2021 · Go to Control Panel > User (for DSM 6.2 and earlier) or User & Group (for DSM 7.0 and above). Select the user whose 2-factor authentication you wish to reset and click Edit. On the Info tab, click Reset 2-Step Verification (for DSM 6.2 and earlier) or Disable 2-factor Authentication (for DSM 7.0 and above). If there is only one administrator user and they need to disable two-factor authentication, you need to reset DSM in order to do so.