I installed screencaptor as I was looking for an alternative to the Winows 8.1 Snipping Tool
The problem I face is that my Dell XPS 15 laptop runs a very high res internal screen (3840 x 2160) and the screens associated with screencaptor are just so tiny I could barely read them. The toolbar you provide defaults to the top left of screen and I could not find a simple way to move it (I place the windows toolbar vertically on the left so your toolbar was hiding the windows button as well).
I pressed print screen (which captures both my monitors, but not well) so you might get an impression of how the screencaptor dialogs appear for me (see the pdf attached).
If you look carefully at the options window displayed on either of the monitors you will see a resolution problems with the option boxes, so much so I could not read those at all.
Not sure you can do anything really, but thought it may be of interest.