How to add custom kits to FIFA 23 (Editor tool not working)?


Club Supporter
I'm trying to add some custom kits to FIFA 23 using the FIFA Editor Tool, however I can't seem to get the editor tool to work. It looks like I need a file called 'FIFA23.SDK' however when downloading it off the FIFA Editor Tool site, that file is missing, and I can't seem to find it anywhere. I tried contacting the creator to no avail.
Without that file I get this error message:


Everything has been extracted and I tried reinstalling the program multiple times. How is everyone else getting this to work without the proper SDK file? Is there another program I can use?