[Togainu]

Well the limitation of the OS is that you can just run Windows Store applications.

However UWP applications (the stuff (not using the bridge) in the store) actually have a lot of limitations and programming alterations based on calls/APIs in the background. Depending on how Hero Lab is currently build and seeing it is a piece of software existing for a long time already. It will require likely a LARGE rewrite of the code to make it work nicely. (I know there is a bridge that should allow for normal win32/.net software but not sure of the bridges capabilities haven't used that myself)

This said Hero Lab Online is currently in the works. Which is likely a web based interface for Hero Lab. This should just work in Microsoft Edge. However we don't currently have a lot of information in regards to release schedules and how things will work.