Broken app that looks terrible

The app is broken. Clicking the check-in button goes to an error page for example. I was able to add my flight details with my booking ID but the app doesnt appear to do anything with it. When I tried to check my baggage allowance the buttons didnt do anything. I am using an iPhone 6s. Crap App.

App User in BC Canada about Air Canada + Aeroplan, v3.30