Just went wrong with the up date but over all great app

First of all it was a great app all they did was update it and just problems now I couldnt open it after the up date I waited it out it finally open that was good then I was able to see my pics but the next time I opened it, it ask me to buy memory so save my pic cause they can get lost so I did now I cant see my pics only the new ones I add I can see... whats going on with the app ?

:0) big dog about Photo Lock Vault Calculator +, v4.1.1