Cannot See login/passwords on iPhone

These instructions on how to stop and restart the IOS app just saved my life!! I noticed that logins were suddenly no longer in sync between my iPhone and my Mac. Somehow (don't ask me how), Dropbox sync got turned off on my iPhone5. When I switched it back on, 1P prompted me for the Master Password on my iPhone. Somewhat flustered by now, I was confused about which password it was prompting for. I went over to my Mac, brought up the 1Password help, and view the video on syncing Macs to iPhones. When I returned to the iPhone, 1P had timed out and was prompting me for the Unlock Code. I entered the code, and saw nothing but total blackness on the iPhone screen. After 2 minutes, it timed out and asked for the Unlock Code again. Repeat code entry, Repeat Blackness. I was totally stuck until I found these instructions!!

Stopping and restarting the IOS app brought back everything. I turned on the Sync switch, entered the password, etc., etc., and everything is back to normal. MUCH THANKS!!!