my game version now is 0.64, did my progress lost if i download and use the new version? or the progress already saved on my current device?
It depends on the system you use. For windows, you can still load your save on a new game installation. For Android, you update the gem to the next version.
Save file locations are found in the following directories.
Windows: %APPDATA%/RenPy/TownOfMagic
Example: C:\Users\[USER]\AppData\Roaming\RenPy\TownOfMagic
MacOS: library/RenPy/TownOfMagic/
Linux: ~/.renpy/TownOfMagic
Android: Phone\Android\data\www.townofmagic.com\files\saves
If a save loading does not work, try loading a save from the Q section of the loading screen.