Profile Link: https://bitcointalk.org/index.php?action=profile;u=1839037
According to my activity on bitcoin, I don't remember any such activity that can get me rewarded with negative trust. Please look into this matter.
P.S. Yes, I am using account on 2 pc at home and other place. That has nothing to do about it. Check the reference of your trust feedback. You clearly tried to sell a service on a third party website that is highly frowned upon by a lot of users here, and might even be against forum rules (ICO bumping).
See
https://bitcointalk.org/index.php?topic=4651326.0