Weirdest bug ive seen in a long time! Help me please this is for minecraft pe 0.9.5

i had a world with the seed epicnesss jebness and i got iron armor and tools then i logged in my world for the i think 7th time i think then suddenly i was dead and in a super flat world in survival! then i re logged and then all the chunks were loaded normally except for the one i was in so i stayed at the bottom of the world :O i dug up and everything was fine but that Huge Crater was still there and i lost my items and all entities despawned. what happened!

i am on an I Pod 4 G running I.O.S 6.1.6 please help! witn version 0.9.5
it wouldnt let me select pe orr 0.9.5