I have Master MX 3 and MX Keys. Unfortunately, the MX Keys suddenly decides to no longer connect via Bluetooth. Currently, I am having to use my Apple keyboard. This has happened many time but this time it seems terminal. The other issue with MX Keys is that is ghosts terribly. It repeats letters, words and sometimes phrases. Whatever this beta trail hopes to achieve, I hope I am able to use my MX Keys at the end of it. It is a really good keyboard, when it is working!