I'm not sure if there's a difference, as all versions of the game go through uPlay regardless of the vendor it was purchased from. However, I could be wrong and this could be the exact issue. I got mine from greenmangaming, which is essentially a uPlay copy.
the only difference between the uplay and steam version is the .exe.(this is usually the case with most uplay games on steam).. and sometimes the trainers will work for both .exe, this time its not the case..
but maybe if someone posts the uplay .exe, 0x90 may be able to look at it..
The trainer for the UPlay version of the game will be posted soon.
Adding or editing skill points work for all character of the party now, don't forget to read the updated notes to see how it works in detail.
Thank you very much for taking the time to look into this man. I really appreciate your work.