We temporarily don’t support search by booking references. Access to it for third parties was closed by the main provider.
Some of the apps that support booking references belong to these providers.
We are working to restore this feature.
If you want to be notified by email when it’s available, tap here.
Also, we have the petition (which we will pass to the providers of such info) and we would much appreciate if you can sign it up: https://www.change.org/p/amadeus-navitaire-sabre-travelport-provide-access-to-the-flight-bookings