Dropbox Syncing & Passcode

I got a new iPad (Mini 2) and was able to get the Dropbox syncing to work there. Still not working on my old iPad (2). It causes it to crash on load. Some entries did load on new iPad when doing sync. I had to type them in again. Not bad to do as there wasnt much entries to type. Ive deleted app from old iPad as it is not working and I have it working on new iPad. Not needed on old iPad.

I finally downloaded the app to my iPhone but I cannot add a passcode. Every time I go to add the passcode I cannot click on Done. Doing so does nothing. I can go back to settings but passcode is not saved. This needs to be fixed. I am on iOS 9.2 on iPhone 6s.

Elisa Joy about My Secret Diary