Omg... I'm so stupid :( I found out, guys!
For everyone who has the same question as me:
Do as your told in the tutorial. When you open Fifa, go to Customise-> Profile -> Load Squads -> "Community Mod V4x"
Thank you @Sebbastos <3 You are awesome!!!!
He's talking about the file you need when you import a mod from withing CGFE. When you import a patch after opening CGFE (not at the splash screen), you need a .cgm file. The file you uploaded is a .cgp file.