Hello, sorry that you are having issues with the game. Is this happening on the mac, windows, or android version? And is it that you are trying to save on an old save that you have loaded, or on a brand new one save file?
Currently trying to replicate this and not finding anything wrong with being able to save on my end.
I would first delete the entire game and then redownload it again. If the issue still persists, walk me through the entire process that leads up to the error. From opening the game, to every button you click on so that way I can see if I can replicate it on my end.
Before that though, when you say you can't save the game at any point is that anywhere, no matter the chapter you are on? Also what happens with you press the ignore button?
And just to double check, when you opened up the zipped file for the first time, you didn't move any folders around or deleted anything correct?