Something that I wanted to say, 80000003 is for the third Mii Account made in your Wii U, it's actually 8000000x how the folder should be called.
Create an unique save in any game on Loadiine with the Mii that you want to use and it will create a folder with the number that should your Mii use in every game that you will inject, if it's the first one made on the console it will be 80000001, the second one is 80000002 and so on, for example in my Wii U I need to make the folder 80000007 because is the seventh account made in my console.