1. You can retrieve your login details to the registered emailed using the link provided (https://www.lfs.net/?page=loginreset). Now, the "thief" might have already changed the email address to one of his/hers. But have you tried it?
2. As stated on that page...
When you wrote to the developers did you included the above, "proof", that they've requested?
3. If you did all that and they still didn't reply, shame on them. If you didn't do any of them - why not?
Since it works with other games (I'm assuming PC) lets say the drivers and calibration is fine.
Are you using the Logitech Profiler? If not, download and reinstall the correct drivers: http://www.logitech.com/en-us/441/5184, calibrate and launch LFS via the profiler.
If you calibrate the wheel during install there's no need to calibrate it again when using the Profiler - each time you plug in the USB it'll do it on its own. Make sure you've setup the the axes/ffb in LFS correctly and it'll be fine...
Have a look in the LFS Manual for all sort of tips and guides. A lot of useful stuff can be found in the forum too; have a look in the stickied-threads or search for key words.
If you need any help, just post in the relevant section and someone will help you out.
If you're looking for specific race sets you can find them on the following two sites (they're sorted by car/track).
What I used to do was spectate after each race and then join in after the grid was sorted. Of course that only works when there are less drivers than the grid size... (or you get the "race full" message).
You can swap the grid places if the race was starting off the lobby, but not when it restarts while on track...
Mandatory training: it might be considered too restrictive (for some people), although I support the idea:
How about the Training-level check associated with each license as you've stated? The host.cfg could have a line to select the minimum training level required - thay way some could require no training whilst others would require full training.
Maybe the level of completion/how well you did in the training could be stored in-game and checked everytime you go online? Something like that will be automated where uploading your results would be kinda complicated for some users who just want to race online...
Hi, you would initially get 3 unlocks when you buy the game. When you use them up, each Friday you will receive 1 (up to a total of 2). I believe number of unlocks are in place to limit the people misusing the license.
Why did you have to keep uninstalling it; were there any errors?
If you didn't know, Z25 is an older version. The current version is 0.6B, which can be downloaded from the main site: http://www.lfs.net/?page=downloads
I thought all you had to do was go to Options > Controls: Select Wheel/Joystick (DFGT should be automatically detected).
On Buttons 2, next to horn, click on [none] (under the "wheel buttons") and just press the button you want to act as the horn. The same could apply to rest of the buttons.
If you have the logitech profiler installed, you should be record a keystroke and assign it for a button too, but that's the long way around; but needed if want to map the indicators.