I'm convinced its a server overload from the community goal (which i belive finished thismorning). I get in, and then loose server connection after about 10(ish) mins.
The only thing i found works is:
-Go to the steam library (on PC) and force open/close on the Elite Dangerious game.
-If you get the fail screen, taskbar close launcher and confirm the game has been closed on steam.
-Repeat process, until the play tab appears.