CC Magic issue (from a non-english gamer)

Like the title says, I am currently trying to use CC Magic for the first time and am facing an issue with it. To put things into context, I am a Windows user and have the base game and 8 DLC that I bought myself and 2 DLC that I... acquired differently. I am also French—which means that in my Electronic Arts' computer file, I have both "The Sims 3" and "Les Sims 3".

Now, the issue is that all my packages and important stuff are in the files "Les Sims 3" so naturally, when I downloaded CC Magic, I put my packages in the Download's file like the instructions said to do (it's empty of course with only he "nav.bin" and "FSIViewCountTracking").

But here's the thing... Nothing appear on CC Magic—and yes I refreshed. Not thinking twice, I decided to put my packages in the Download's file in "The Sims 3" instead and it worked. I was happily cleaning and organizing my packages there, making sure to refresh, to rebuilt and that in Configurations, all my stuff were enabled. I really followed every step, but when I opened my game, none of my packages were here.

Trying to find solutions and reading comments, I saw someone saying you have to open the game for the first time from CC Magic directly, but I can't. Also, others said they never had to do this.

I thankfully found a video in French, and the person said I had to open the computer commands to connect "The Sims 3" and "Les Sims 3" except... it says it's already done. The person put all her packages in the Download's file of "Les Sims 3" and it worked for her, but when I tried again, they still didn't appear for me.

Did anyone have the same issues as me? Did you find a solution? I really wish to make my game smoother and this would help a lot... Thank you!