| Timer does not start | A control may be inactive or the page has not finished loading | Reload the page, choose a mode and duration, then press Start again. |
| Remaining time looks wrong after refresh | The device clock changed or saved state is stale | Check the system clock and restart the affected session if needed. |
| No sound at the end | The tool or device is muted or audio playback is restricted | Check volume and mute settings; test a different alarm and interact with the page first. |
| Browser notification never arrives | Permission is blocked or operating-system notifications are suppressed | Allow notifications for the site and check device focus or do-not-disturb settings. |
| Notification arrives late | The browser or device throttled or suspended background activity | Keep the device awake for important timers and use an independent alert for critical events. |
| Pomodoro break starts unexpectedly | Auto-transition or auto-start is enabled | Review cycle settings and disable automatic behavior if you prefer manual transitions. |
| Long break does not appear when expected | Sessions-before-long-break differs from the assumed setting | Check the configured number of completed focus rounds. |
| A skipped interval is missing from completed counts | Skipped or interrupted sessions are not recorded as fully completed work | Review the history rather than manually treating a skipped interval as finished. |
| Task focus time is not assigned | No task was selected when the timer began | Select the relevant task before your next focus session. |
| Tasks disappear in another browser | The data is stored in the original browser profile | Import a JSON backup or use the original browser where the records were created. |
| History vanished after clearing site data | Browser storage was deleted | Restore from a saved JSON backup if one is available. |
| Offline mode does not load | The page assets may not have been cached or offline support is unavailable in the current browser | Load the page online first, then retry offline access. |
| CSV looks incorrect in a spreadsheet | The spreadsheet guessed separators or encoding | Import CSV using the correct delimiter and UTF-8 interpretation. |
| JSON backup will not import | The file is malformed or not a compatible backup | Use an unmodified export from the tool and inspect the import error. |
| Focus chart looks lower than expected | Only recorded sessions count and dates may be grouped by local time | Compare individual session history and confirm date/time settings. |
| A streak reset unexpectedly | No qualifying completed session was logged for a calendar day | Review daily history and avoid treating streaks as a measure of your worth or overall effort. |
| Interval workout phases do not match the plan | Work duration, rest duration or round count is set incorrectly | Confirm all interval parameters before pressing Start. |
| Stopwatch lap timing seems imprecise | Browser timing and device resources impose limits | Use certified timing equipment for precision-critical measurement. |
| Fullscreen view is unavailable | Browser fullscreen permission or device UI restrictions prevent it | Use the normal large-display theme or adjust browser fullscreen settings. |
| Keyboard shortcut does not respond | Focus is in an input field or another app intercepts the key | Click outside text fields, then try the documented shortcut again. |
| A PDF download option is not visible | The page uses browser printing instead of a dedicated PDF export button | Open the print report and choose Save as PDF in the browser dialog. |
| The API cannot be found | The developer API is described as planned rather than released | Use the current browser UI and documented CSV/JSON exports. |
| Goals are too demanding | The chosen focus target exceeds practical available time | Reduce targets, include breaks and evaluate finished work as well as minutes. |
| Timer distracts rather than helps | Visible countdowns or alerts can interrupt the task | Try fullscreen minimal mode, mute ticking or use fewer timed blocks. |