It happens to me too in a lot of VNs, usually the best solution for me, was to the delete the app and then just install it again with the download. You will lose your saves but the app will work again.
Yeah thats why deleting it is just easier just remember where you left off then go to options/preferences and switch your skip button to "unseen text" to get back where you were or just play the VN from the start again if you dont remember all of it or just for fun :)
