If you take a look in your presets folder, there should be an .fhp file with your username. If you don't see the preset, you could try restarting the game and try to export it again. Also, before you export the preset, be sure that you're logged in with the exact username that you registered with, not a variation of your username, since the log-in is case sensitive. If you don't log into the game before exporting, it has no idea who the preset belongs to.