New one bug are minor, can be fix , if you want full version without restriction then you might want to check the DLC , type in google "this game name" dlc. and you will get it from the website
I assume, for whatever reason, that your registry entries are bugged.
But you could try first to delete the SaveSettings.xml in Mad Island/Mad Island_Data/StreamingAssets/XML/ if that does not work you can try to open regedit and traverse in that tree to Computer/HKEY_CURRENT_USER/SOFTWARE/Emade Plus/
then right click on the Mad Island folder there and press delete. DO NOT delete anything else, just the Mad Island folder inside that location in regedit!