Arr, if I'm not mistaken, are ye' tryin' to upload the literal preset files? If so, those are not the files ye' want to upload to the sync. Ye'll need to export the preset first in the game. That way it'll give ye' a .fhp file usually located in yer Local Disk (C:) > FeralHeart > Presets folder. It'll be titled YourUsername_preset#.fhp That's the file ye' want to upload to the Preset Sync.
Ye' could also take a look at this tutorial 'n see if it'll help ye' any if above is not the case here:
http://www.youtube.com/watch?v=U3QjreQWuKg (http://www.youtube.com/watch?v=U3QjreQWuKg)