Just press CTRL+F and start typing your in game profile name to find your correct GUID.
You can't find it ? So you need to finish at least 1 eventr (race 2 to the end) on a registered track (you may prefer the standard tracks).
IMPORTANT: If you haven't purchase your game on Steam (so you have a standalone version), the GUID listed in this page will be WRONG. You need to refer to your game, profile menu.
| NAME (IN GAME) | GUID |
|---|