If you want to change the money you can go to Computer\HKEY_CURRENT_USER\Software\GlassAtelier\IVAV in the registry.
Search for Money_h210021813 in this folder, open it, switch from hexadecimal do decimal and change the value.
Then start the game.
I got that too some weeks ago. If you copy the pw and paste it, add a character at the end and hit 2 times backspace. At least i was able to get rid of that invisible character like this. If i try to delete it without adding a character it will ignore the invisible character and delete the others.