Ratimov reduced the pledged amount by 0.0435 BTC, currently worth $1649, after 90% of the contest's running time passed.
Now he has a good reason for that. In short, Ratimov Symmetrick made a new "trick":
Today I am leaving the MixTum.io campaign, thank you for the opportunity to represent this service.
The good reason I mentioned above is, of course, the fact that he can not pay since he is not receiving any payment from a signature campaign (/s).
Now all that's left is changing the payment address for his signature campaign 
You did not see that coming, LV!
Instead of changing the address, he left the campaign.And this only proves my earlier statement:
In this guy's case everything looks shady. Even the new name, because "Symmetrick" contains the part "Trick"... Like he is trying another trick. Maybe his final trick before exiting the stage?