@Wan
Hey, something similar happened to me once. If you upload your save data (it'll be an RXData File, and it'll be like game.rxdata) then someone here may be able to help- tag one of the game devs maybe
You'll find the file if you look at my screenshots and follow what I've done.
Go to your PC's files, into your user data, look for the Saved Games folder, find Pokémon Rejuvenation, and click on the game.rxdata to upload it
and also tag a game dev for help, like Jan, Zumi, etc.
Hope this helps!