I am having a problem very similar to this. I have tried a couple things including a work around that has worked for some people on this forum however I have not been successful. Nothing yet.
I'm also having this problem. I go to enter my vault and then the app crashes. 0.o
Same issue here. Crashes at title screen, before the screen to choose a vault.
It started a few days ago for me.. I payed some of lunch boxes and was playing it everyday! I didn't update or anything. I tried rebooting my device over and over but nothing changes.. Please let me work on my vault 953...