just purchased and won’t work at all

Trying to track a flight today - which was my whole reason for purchasing this app. I can enter the name of the airlines, but when I put my cursor in the box to enter the flight number, it won’t let me type and numbers. I tried uninstalling and re-installing, but nothing works. My husband (who shares the iTunes account) downloaded it on his iPhone - same problem. I’ve given up on getting the information I needed TODAY on a flight. Maybe it will work later? If not, I am petitioning iTunes for a refund!

Pshebcuag about Flightwise Flight Tracker Pro, v2.0.1