Got it on gleam.io. Hope I choosed everything correctly :)
It was signed as DAF XF Unity Edition Campaign but linked to XF Tuning Pack.

There is a quite low chance of it, but if a key doesn't work, please let me delete this giveaway.
(I'm trying to notice this each time, as such thing may happen everywhere)

Love you and good luck!

!Remember that you need to have the original game to redeem this DLC!