Yes, MDS MY is a sofware based on chrome extension, so you can install it in any operating system with chrome browser installed.
You can install up to 3 devices with registered device key unique by google chrome browser per profile.
Yes, we will update our application frequently, and It allows you to give suggestion / request to us about the feature.
We don’t guarantee all functions will work forever, It depends on marketplace itself. But we will try hard to follow how marketplace is doing especially if the feature will not work in the feature.