The status bar says "order waiting in TWS"

What you see. The status bar says order waiting in TWS.

Why. Transmit was unticked in the Commit dialog, so the order is staged in TWS and nothing is live yet.

What to do. Open TWS and transmit the order there.

The trade’s header shows the same order as In TWS · not sent, with a Transmit button on the chip. Click it and confirm “Transmit this order?” to release it from Tented. If you changed the order in TWS, transmit it in TWS: Tented does not read TWS edits back. See Parked orders.