Third call did the trick for my Green Award choice to appear
I called last week and the week before, each time they "send an email" to get it fixed. Still no reward choice this morning, so I called.
The operator told me to log out, he did something on his end, and when I logged back in the Qantas android mobile app I finally got the reward choice (immediately, while on the phone). Did he really do something, or was it just a matter of logging out / logging in? Was the previous email msg they send effective at all or not? I don't know. But for those waiting on their reward, I would try to log out and in again, just in case.
Now I am maxed out for 1st of April reset: 500SC rollover + 100SC PCP rollover + 50SC Green tier + 50SC loyalty bonus.