Hello! Are you trying to load a save file from a different computer, perhaps?
If so, you need to follow the guide posted yesterday, titled "How to transfer save files".
If this is not the case, then I'd appreciate it if you could send me your "config.sav" and "data.sav" files located in C:\Users\(NAME)\AppData\Local\PocketCrystalLeague to my email moodytail@protonmail.com so I can check them out. Thank you!