Hi there, Jalix. It's quite unusual since this issue is affecting only one person. As a result, we can't pinpoint the exact cause of the problem.
Most likely, this issue is related to her device, connectivity, or her usage habits. If her internet connection (either cellular or Wi-Fi) is slow, she might press Submit, see no immediate reaction, and tap it again, which leads the app to queue both commands. Once the connection stabilizes, it pushes both entries to the server. You can ask her to wait at least 5–10 seconds if the app "hangs" before tapping again.
To deal with the duplicate time entry, you can delete the duplicate one by going to the Time entries tab in QuickBooks Online and clicking the dropdown > Delete. Alternatively, in QuickBooks Time, click the Trash bin icon in the Time Entries tab.
If you have any further questions, please don't hesitate to revisit this thread.
