I have used MX Master mouse for many years and last year I decided to get the keyboard as I use it everyday for work. I started getting issues with my keyboard not connecting and then it stopped working all together about a moth ago or so. I have contacted you several times looking for help and still nobody has. I spent £100 on my keyboard thinking I was buying a quality product and at the moment I am using a £25 keyboard that out performs it in every way. I wanted the mouse and keyboard for my work flow as I use a lot of post production and video software for my job. Who is going to help me because at the moment if anyone asked I have to tell them that Logitec is a huge disappointment and not worth the cost...