We appreciate you for bringing this matter to our attention regarding your difficulty with deleting invoices using batch actions in QuickBooks Online, Agatha.
To better assist you, could you please let me know if you're encountering an error message when attempting to delete the invoices or if the delete option is unavailable on your end? Any additional information would help narrow down the cause of the problem.
In the meantime, we recommend clearing your browser’s cache to eliminate stored data that may be causing display or performance issues. Also, ensure you're using a supported browser if the current one isn't interacting well with QuickBooks.