Icomntacted technical support twice, a year ago and now with a problem with scrolling. A year ago, I was given some kind of reconnect utility, and the problem was temporarily solved. Some time later, she reappeared. Now he applied a month after the end of the warranty period, got off on duty: reinstall / reconnect and sent nafig in the end, with the words too late and the guarantee is not valid. Moreover, this problem exists all over the world and, probably, the product should be withdrawn altogether. Here is a link to the official forum, where people ask, but there is no answer: In general, it was not so much the mouse that upset me, but the very attitude of the brand I respected earlier to the real problem of their users.