Yes mate you can message the moderator to know what happen why you received that negative trust. But i am sure you did some violation that is why they put that trust on your account.

Just read the reputation put by moderator and avoid that in the future and hoping that you will not encounter this again, i know it is possible to remove that trust by requesting to the mod who wrote that in your account just try it man.

And after that mate just improve your post because that is the specific accusation in your account.