If this just gets buried in here while also proving to be useful enough, I'll make a new thread.
But given how many people are having issues pulling up PNRs or figuring out why they can't change seats, etc., I did some searching. Amadeus is used by so many airlines, there are actually some interesting and open data sources available.
As such, I've cobbled a some stuff together.
https://api.ft.canadiancow.com/pnr/p...3&lastName=Cow
Replace the booking reference and last name with your own details, and you'll get a nice little screen of information. I promise I am not logging anything.
Here's one example, showing I have a TK segment, which explains why I can't do anything on AC's site (I need to call
again 
):
Here's another where the first segment has a stop (I've always found it a pain to get those details).
As usual with this stuff, I make no guarantees it will work now or ever. If it fails once, just refresh. If it keeps failing and you want to help, PM me the booking ref and last name.
I'm also happy to take requests for other data you might want to see. Seat selections, etc.