If you just went around the official community, you'd already know since weeks ago that you were a lucky exception for iOS connectivity issues. Many haven't been able to play for one month and over on iOS.

Same goes for Steam actually being the stablest platform as of date.

If you have stored on your cache any Magic Duels updated earlier than 1.04 (1.03 is good) you'll be able to go back and play by switching to the previous build. They haven't done any kind of rollback to solve it anyways.
 

And the numbers of players are dropping fast now. On Steam there has been a decline from 10 k simultanious plaers to a mere 2,5 k, and it´s still going down...

To bad. I liked the Duels-version, not as money-hungry as the full game...