"Configure Start10" settings window too big for my screen

I have a high resolution ultrabook (Dell XPS13 9350, Windows 10, 13" 3200 x 1800). Yesterday, when I installed Tiles, I found that when I open the "Configure Stardock Tiles" window it is both higher and wider than my screen (or higher than my two external screens if I use them - the width is 75% of both screens). Now I installed Start10 and I have the same problem with the the "Configure Start10" settings window.

This means that I can never see the bottom of the settings panes, for instance I can never see and set the settings at the bottom of the pane Start10 > Style > Configure, because these settings are below the bottom of the screen. And this settings window is not possible to resize.

Below you see how it looks like when viewing the settings window with two external screens.

How should I solve this problem?

/Bengt