Hi there,
This is an incredible, generous app running so well on Windows 10 otherwise! The only issues I've run into are in creating new charts, which I'm copying from my Astrodienst individually.
A lot of my database was born in the Lower Midwest, think Illinois and Indiana, where the boundary between Central and eastern time has changed not infrequently in the last half century. Inputting local birth times for the US coasts works great, but I've needed to type into "Other..." under the UT box enough times to flag it.
Also, in the "Time Exceptions" dialogue pulled up by the "..." to the right, it looks like the +/- is labeled backwards longitudinally; I select "USZ4 Zone 4 USSR -5" for Eastern Time (UTC-05:00) when Russia Time 4 should be +5, letting aside the USSR fell three decades ago.