Ok, I think I'll give my 2 cents on this. As I mentioned earlier, I have now had some time to test out this game, and I like it. Now to the topic at hand: Trainer working or not ? *hmmm*
As I mentioned I have the D2D version of TDU2 and the trainer is not working for me, tried a few options and nothing appear to happen. Closed the game, closed the trainer, started the trainer (as admin) ran the game, pressed start when able to and hit the menu and pressed F1 game stated "Trainer activated" entered an auto dealership and took a look around and BOOM! game crashed. Ok, once more and same thing happened. I managed to play with trainer active the very first time where nothing worked. Ok I have the SKIDROW exe file, replaced it with original exe (backed up my legal exe file), did no changes to my firewall to block out the exe from SKIDROW, started trainer then game, loaded up an off line profile and hit F1 after getting the menu up, entered freeride and hit F1 again and saw my car just vroooom ahead. Hit the superjump and I flyyyyyyying... very fun option.
The way this works is good enough for me, I wont use the trainer on my online profile, that's just not fair.
It's a real possibility, and this activity isn't supported. If the trainer doesn't work on MP, or if you get banned, it's your own fault. Remembering back to TDU 1, people got banned for manipulating the MP scoreboards via the use of cheats (speed, timer etc).