I still have the same issue, wtfast solves it and any other game works fine with my normal internet connection.
My WTFast trial expires in 20 days, I'm not gonna pay for a third party software to play a paid game so I will unsubscribe if it's not fixed.

I hope a lot of people will unsubscribe for this, 10 days of this problem and still not fix, SE don't even understand how bad is this.