In very rare circumstances the app or database on your local device may have been stuck in a broken state. You can delete all local settings and synced data by "resetting the application". Follow the screenshots below for this.
Your user details and data that is synced to our servers will not be lost. This information simply gets downloaded again when you reload the page after doing the reset. However, if your device has not synced recently and you can not see some new data on other devices yet, such local data may be lost during a reset.