There are no roaming files on my PC. I’m hating this because he wants mods and I cant find any files anywhere to save. I hate programming and feeling dragged into something I cant possible manage. My son is only 8. There is no file path app data .. I have spent hours looking. It must be hidden.
I totally understand how frustrating it can be!
Check that you can see hidden files. It's a setting in the control panel, in Windows 7 you find it under Appearance and Personalization > Folder Options > View tab > Advanced settings ... then click Show hidden files and folders.
If that doesn’t help, let me know and I'll see if I can figure it out for you.