Hi AkiNariT thanks for buying and for the detailed feedback. You're right, the ZIP was corrupted and missing ~2,800 tiles.
I've rebuilt the ZIP from the source images. It now has all 12,847 tiles and extracts cleanly.
Can you re-download from your itch.io library? The file has been replaced. If it doesn't auto-update, try clearing your browser cache or use the direct download link on the purchase page.
Sorry for the inconvenience, appreciate you flagging it