I have the app on my iPad Air2. It is a phone app but you can double the size of the screen when in the app to fit the iPad screen. I just downloaded it from the previous apps in iTunes. I have never synced this current pad to a computer.
I think the password should still be the same its just the user name you change to the one your iTunes uses or the one you registered with on a desktop. That's all I had to do. Hope you get it sorted.
As Rugrat says above. There is a massive improvement on the video quality with the introduction of HD. For the last few seasons commentary has been a bit unreliable often cutting out or making you listen to Cwawly commentary. I am not sure how much I pay per month though as I signed up years...
After years of absolute muck things are looking up. When the live feeds start for games the real test begins. So far watchable decent quality highlights on iPad.