ok… We are almost there!!
the app seems to work properly now, except by the strange behaviour when trying to scan a window at a second display: The whole 1st screen (from my macbook pro) gets black. But it is still possible to see the app icon in the menu bar. when choosing one window from the menu, this windows gets visible but the rest keeps dark. When choosing “desktop”everything is fine again.
PS: there’s no way to scan a window in the 2nd display?
could we have something like drag the mouse over an area to set this as a window? or type the coordinates of the window?
thanks for your support!