I'm quite new to this 3ds hacking thing. I recently hacked my 3ds to start playing games (mostly non-EU games). I installed (if I get to explain myself correctly) was a Custom Firmware with ARM9LoaderHax, installing in the end Luma3DS. Ok, but that's not my doubt. I saw that in freeShop there are still missing some games (for example, Yo-kai Watch 3 or Puzzle and Dragons X), so i looked for some way to download cias, and I found here several programs, one of them being CDN-FX. But I can't seem to figure out how it works. According to this website (https://ptrk25.github.io/GroovyFX/), i just have to double click on the game i want to download, but nothing happens. If I go to the "Title Database Viewer", copy the TitleID and paste it in "Title Downloader Manual", after clicking Generate Ticket, the message "The TitleID or TitleKey is invalid". So, is there any clear tutorial about how to use this program? Or can someone explain to me how to use it? As I said, I'm new to this, but I think this way is safer than downloading cias from weird websites.