I have contacted TT for some issues with TT commander - LCD backlight falling about 2 weeks ago through E-RMA, 'support@thermaltake.tw' - got back reciever can not be reached, contacted them through support@thermaltake.de - GOT NO ANSWER AT ALL.
Its is only about 40 eur of loss for me, but since i bought quite some TT stuff i will do no sought things in the future. I will also not recommend others to do so. This is 1st time i had to contact TT support and in this experiance it failed in regard to all other (corsair, evga, etc..).