I am also being randomly signed out. I am accessing my tree through Safari on my iPad (not the app). It started a couple of months ago and is so frustrating I am almost ready to give up. Like others have said I can work sometimes for an hour or more without a problem and then all of a sudden I have to sign in every few minutes. Other days it starts immediately especially when I try to open up a record. It has to be ancestry because I do not have this problem on any other sites.