Convert box flows off screen`

I just installed a new monitor ASUS VS207T-P. The "Convert Books" box now exceeds the height of the screen, making the "OK" button inaccessible.

I first tried the monitor's "Optimum Resolution" of 1600x900, then reduce to 1440x900. Then I made sure to install the latest Calibre version. All no help

How can I get my conversion feature back