I've got additional steps to ensure you can see the Choose what to clear option, @Cas9.

To accomplish this, you'll need to tap the Privacy & security tab located at the left pane after you click Settings ⚙️.Once done, select the type of data you want to delete using the Clear button. Please refer to the screenshot below as a visual guide:

For more details about it, please check out this article: Clear cache and cookies.

You can also run a couple of payroll reports in QuickBooks Online to monitor your business finances. Simply go to the Reports menu, and then explore the Payroll section under the Standard tab. 

I'm just a comment away if you need more QuickBooks help. Take care and have a productive day.