Not sure if this is the right place, but I'm new to EF.

I found my fare basis code for a flight from AUS-LAX-AUS on 9/19-9/23. The ticket was booked 9/12. The code is TA7NH3MF (from pnr.sh). But when I enter that in EF, including the ticketing date, under the fare information tab, nothing shows up. When I look for all fares in the T bucket, that one doesn't show up, and the fares shown are all higher than the one I paid. Am I doing something wrong?