Hello,
Thanks for your message and for purchasing the game, it's really motivating!
Sorry to hear you encountered an issue while playing. The main difference between the full version and the demo is that you can't collect all the outfits in the demo.
Had you already chosen previous outfits before the issue occurred, or was it your first time selecting one?
Also, if you have a screenshot of the error that appeared, it would really help me debug the issue.
To avoid cluttering the comments section, could you send your reply to my email at doujinsoft.pro@gmail.com? That way, we can continue the conversation more easily.
To update your game, you simply need to download and run the new version. Your previous save files will be localised automatically