Hello,
There seems to be 2 major issues. DPI scaling and some kind of mouse pointer issue.
everything in the game is SUPER small people online have suggested using something like disabling DPI awareness in your app but I don't know how to do that with haven since its a java app.
2nd issue... when I login I can click all menus I can walk via the map... However I can left click ONCE in the game region to walk but after that it will not recognize my left or right clicks thereafter... I don't really know whats going on with that and I am hoping since the surface is fairly popular that someone else has run into this.