Worked on the nextcloud/notes-android repository to enhance authentication reliability by improving documentation related to token management. Focused on clarifying the TokenMismatchException FAQ, the work explained how backup and restore tools or hardware migrations can invalidate authentication tokens for third-party apps using Nextcloud SSO. Updated remediation steps now guide users to resolve token issues by removing or re-importing affected accounts, streamlining troubleshooting and reducing support overhead. All documentation changes were written in Markdown, leveraging strong documentation skills to ensure clarity and traceability. The update was directly linked to a specific commit, supporting auditability and maintaining alignment with the codebase.