Expenses drop down category list is missing on QuickBooks App

I'm here to provide you with fixes to show the list category of expenses in QuickBooks Mobile Apps, @chris435.

I've checked our records and haven't seen any cases similar to yours. I recommend refreshing the application to give it a fresh start to help resolve common issues and enhance its performance. Please ensure that you're connected to the internet, then follow the steps below:

1. Proceed to your phone's settings.
2. Select General, then choose iPhone Storage.
3. Tap QuickBooks Online from the application list.
4. Select Offload App to free up the storage without deleting the documents and data for the app.

If the issue continues, perform to uninstall and reinstall the mobile app to avoid these unusual behaviors. Also, you can log in to your QuickBooks Online company file using a mobile web browser and see if the expense category list is now showing.

Furthermore, you can also explore this article to have an overview of software capabilities: QuickBooks Online app overview.

I'm always available for any follow-up questions about the category list. Take care.