don't use the two part authentication my self.
had SH5 + twos 2.2.15 ( installed when .2.2.15 released ) and just started the game and was ok.
updated too 2.2.# to 2.2.16 and the game loaded to menu ok and ( testing to see if was only with new installs of SH5 or not) showing correct versions and gives the loading bar then black screen and CTD'ed <--- guess its not....
just got the Sub Buddy attack disk installed on the ipad too
