Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
It all comes down to the device and hardware, they released a version a couple months back which was too heavy for some of the older models to run so they launched what seems to have been a "light" version after a short while which seemed to remedy things for most. Thing is, this can only delay the inevitable to a certain point and does risk to strike again as tech advances. Maybe have a read of this if you haven't already: https://care.king.com/en/bubble-witch-2-saga/problems-with-your-games-crashing-loading-on-certain-ios-devices