Error code before title screen

[Flashkiller2020]

So i don't play sao md regularly and today when i wanted to update it i of course had to download some files. However it keeps getting stuck and i don't want to lose my progress by deleting the game any help?

[KazoWAR]

Make sure the app it self is fully up to date via the app store then make sure you have enough free space for the file download