Hello enquiries-yourlo, welcome to the QuickBooks Community regarding the category's missing from the app. This issue has been raised to our product engineers who are currently working on a fix. We apologise for the inconvenience this has caused you. We can add your company to those impacted and we'll email you as soon as this is fixed. In the meantime, it will be a case of using the browser version to add expenses as the categories should show as normal on that version. Any questions let us know.