That is quite odd! I know you stated you already reinstalled the game, but can you try to do this once again, but this time instead of logging in, remain on the menu. Take a screenshot of the main menu and send it my way.
Also, can you confirm whether you are on a wireless connection, or a 3/4g one?
The "insert picture" Icon on this page is "grey", so I cant post any screenshot here!
But I guess the only interesting thing should be the version number (or whatever the number is for) on the menu/options screen
The number is 1.8.0 (373312+386264)
And I was wrong about 1 thing. I can get access to my account settings in the options pane, when pressing the "help" button. witch makes no sense to me. But I have no access to my friends worlds any more.
The connection is wireless, as the opposite to wired connection.... 3/4g!!
I am using local WI-FI.