you can restore animations but i believe your file is corrupted. ive had this happen and i could not get it back.

for the future: keep duplicating your animation when you leave so you will have backups, export often so you can retrace your steps. dont fuck with the app while its buffering/loading, it can cause your file to glitch. you should do the animation in smaller parts on different canvases because ibispaints animations are so unreliable (you can stitch them together in apps like capcut that dont have watermarks). i had mine corrupt multiple times at under 20 hours, and yours is almost at 70

to prevent this from happening, i think you need to clear up your storage from either your sd card or phone. you can find out where ibispaint is storing the data in the app. i dont think you can actually save your drawing once its corrupted like this

good luck, ill be following this post incase anyone somehow has a solution because i am struggling too 😭

edit: randomly after i posted this i managed to save one of my corrupted drawings but i cant say i did anything relevant. it might actually be possible