Ensure you haven't nested the folders too deeply. ux0:/rePatch/GAMEID/ must contain the files directly.
If you need further help or want to contribute to the scene, the following resources are invaluable.
Copy your modified files (the translation patch, mod files, etc.) into that new TITLEID folder.
Inside the patch folder, create a new folder named exactly after your game's (e.g., ux0:/patch/PCSB00245/ ).
This article provides a comprehensive guide to understanding and using rePatch within the Vita3K emulation environment. What is RePatch and Why Use It in Vita3K?