keeps deleting ALL progress – Color By Number! Pixel Art Review

okay so this was like my favorite app ever but this morning when i went on i noticed all my progress pictures progress was DELETED. hours of playing down the drain. so i was frustrated and restarted everything and then when i went back on later everything was deleted once again. it happened another time after that. it’s very annoying. please help because this was my favorite app to use.
Review by Jsjiskskdkdksososood on Color By Number! Pixel Art.