all my apps keep crashing on my ipod

first my ipod 4th generation was working fine until i forgot the password and blocked it. i had it reset and as soon as i started using it again my apps like candy crush saga and pirate kings started crashing. many weeks later it is crashing all my apps including safari, messages,settings and all other apps that are apples apps itself or downloaded through the apps store.

it is annoying me as my ipod is a vital part of my life and i am at the point i am unable to use it.

i need some advice to resore my iopd to its normal self

i have heard it has had a bug on ther latest io6 update