Update: Tried opening the game with no internet connection, no luck. tried again with internet connection, does the "downloading some content" again with stuck loading logo, Tried to re-open the game and now it says that I have to update the game because uploaded save is from a newer version(wth?). Re-opened again and now I'm back to zero. My save got lost. This is the third time I lost my save. After putting a lot of time playing the game(was already rank 35), it just made an insult to me by wasting that progress.
Got the same problem. Opened the game, somehow it wanted to download some more content but it seems to be stuck(loading icon is not even moving) so I had to force quit the app. When I reopened the game, it's now stuck on the initial loading screen. Game is too fragile in terms of connectivity, I lost my save TWICE and might have lost it again after this. Not everybody has a strong consistent Internet EA.